id	sid	tid	token	lemma	pos
ajst-30166	1	1	academic	academic	ADJ
ajst-30166	1	2	journal	journal	NOUN
ajst-30166	1	3	of	of	ADP
ajst-30166	1	4	science	science	NOUN
ajst-30166	1	5	and	and	CCONJ
ajst-30166	1	6	technology	technology	NOUN
ajst-30166	1	7	issn	issn	NOUN
ajst-30166	1	8	:	:	PUNCT
ajst-30166	1	9	2771	2771	NUM
ajst-30166	1	10	-	-	SYM
ajst-30166	1	11	3032	3032	NUM
ajst-30166	1	12	|	|	NOUN
ajst-30166	1	13	vol	vol	NOUN
ajst-30166	1	14	.	.	PUNCT
ajst-30166	2	1	14	14	NUM
ajst-30166	2	2	,	,	PUNCT
ajst-30166	2	3	no	no	INTJ
ajst-30166	2	4	.	.	NOUN
ajst-30166	2	5	3	3	NUM
ajst-30166	2	6	,	,	PUNCT
ajst-30166	2	7	2025	2025	NUM
ajst-30166	2	8	9	9	NUM
ajst-30166	2	9	double	double	ADJ
ajst-30166	2	10	shoulder	shoulder	NOUN
ajst-30166	2	11	thread	thread	NOUN
ajst-30166	2	12	mechanics	mechanic	NOUN
ajst-30166	2	13	study	study	NOUN
ajst-30166	2	14	and	and	CCONJ
ajst-30166	2	15	life	life	NOUN
ajst-30166	2	16	analysis	analysis	NOUN
ajst-30166	2	17	of	of	ADP
ajst-30166	2	18	drilling	drilling	NOUN
ajst-30166	2	19	tools	tool	NOUN
ajst-30166	2	20	junming	junme	VERB
ajst-30166	2	21	zhang1	zhang1	PROPN
ajst-30166	2	22	,	,	PUNCT
ajst-30166	2	23	2	2	NUM
ajst-30166	2	24	,	,	PUNCT
ajst-30166	2	25	3	3	NUM
ajst-30166	2	26	,	,	PUNCT
ajst-30166	2	27	liangliang	liangliang	PROPN
ajst-30166	2	28	dong1	dong1	PROPN
ajst-30166	2	29	,	,	PUNCT
ajst-30166	2	30	2	2	NUM
ajst-30166	2	31	,	,	PUNCT
ajst-30166	2	32	3	3	NUM
ajst-30166	2	33	1school	1school	NUM
ajst-30166	2	34	of	of	ADP
ajst-30166	2	35	mechatronic	mechatronic	ADJ
ajst-30166	2	36	engineering	engineering	NOUN
ajst-30166	2	37	,	,	PUNCT
ajst-30166	2	38	southwest	southwest	ADJ
ajst-30166	2	39	petroleum	petroleum	PROPN
ajst-30166	2	40	university	university	PROPN
ajst-30166	2	41	,	,	PUNCT
ajst-30166	2	42	chengdu	chengdu	PROPN
ajst-30166	2	43	610500	610500	NUM
ajst-30166	2	44	,	,	PUNCT
ajst-30166	2	45	pr	pr	ADP
ajst-30166	2	46	china	china	PROPN
ajst-30166	2	47	2state	2state	NUM
ajst-30166	2	48	key	key	ADJ
ajst-30166	2	49	laboratory	laboratory	NOUN
ajst-30166	2	50	of	of	ADP
ajst-30166	2	51	oil	oil	NOUN
ajst-30166	2	52	and	and	CCONJ
ajst-30166	2	53	gas	gas	NOUN
ajst-30166	2	54	reservoir	reservoir	NOUN
ajst-30166	2	55	geology	geology	NOUN
ajst-30166	2	56	and	and	CCONJ
ajst-30166	2	57	exploitation	exploitation	NOUN
ajst-30166	2	58	,	,	PUNCT
ajst-30166	2	59	southwest	southwest	ADJ
ajst-30166	2	60	petroleum	petroleum	PROPN
ajst-30166	2	61	university	university	PROPN
ajst-30166	2	62	,	,	PUNCT
ajst-30166	2	63	chengdu	chengdu	PROPN
ajst-30166	2	64	610500	610500	NUM
ajst-30166	2	65	,	,	PUNCT
ajst-30166	2	66	pr	pr	ADP
ajst-30166	2	67	china	china	PROPN
ajst-30166	2	68	3oil	3oil	PROPN
ajst-30166	2	69	and	and	CCONJ
ajst-30166	2	70	gas	gas	NOUN
ajst-30166	2	71	equipment	equipment	NOUN
ajst-30166	2	72	technology	technology	NOUN
ajst-30166	2	73	,	,	PUNCT
ajst-30166	2	74	sharing	sharing	NOUN
ajst-30166	2	75	and	and	CCONJ
ajst-30166	2	76	service	service	NOUN
ajst-30166	2	77	platform	platform	NOUN
ajst-30166	2	78	of	of	ADP
ajst-30166	2	79	sichuan	sichuan	PROPN
ajst-30166	2	80	province	province	PROPN
ajst-30166	2	81	,	,	PUNCT
ajst-30166	3	1	china	china	PROPN
ajst-30166	3	2	abstract	abstract	NOUN
ajst-30166	3	3	:	:	PUNCT
ajst-30166	3	4	under	under	ADP
ajst-30166	3	5	the	the	DET
ajst-30166	3	6	trend	trend	NOUN
ajst-30166	3	7	of	of	ADP
ajst-30166	3	8	the	the	DET
ajst-30166	3	9	continuous	continuous	ADJ
ajst-30166	3	10	in	in	ADP
ajst-30166	3	11	-	-	PUNCT
ajst-30166	3	12	depth	depth	NOUN
ajst-30166	3	13	development	development	NOUN
ajst-30166	3	14	of	of	ADP
ajst-30166	3	15	global	global	ADJ
ajst-30166	3	16	oil	oil	NOUN
ajst-30166	3	17	and	and	CCONJ
ajst-30166	3	18	gas	gas	NOUN
ajst-30166	3	19	exploration	exploration	NOUN
ajst-30166	3	20	and	and	CCONJ
ajst-30166	3	21	development	development	NOUN
ajst-30166	3	22	,	,	PUNCT
ajst-30166	3	23	the	the	DET
ajst-30166	3	24	torque	torque	NOUN
ajst-30166	3	25	in	in	ADP
ajst-30166	3	26	deep	deep	ADJ
ajst-30166	3	27	drilling	drilling	NOUN
ajst-30166	3	28	is	be	AUX
ajst-30166	3	29	excessively	excessively	ADV
ajst-30166	3	30	high	high	ADJ
ajst-30166	3	31	,	,	PUNCT
ajst-30166	3	32	and	and	CCONJ
ajst-30166	3	33	drill	drill	NOUN
ajst-30166	3	34	string	string	NOUN
ajst-30166	3	35	failure	failure	NOUN
ajst-30166	3	36	accidents	accident	NOUN
ajst-30166	3	37	occur	occur	VERB
ajst-30166	3	38	frequently	frequently	ADV
ajst-30166	3	39	.	.	PUNCT
ajst-30166	4	1	the	the	DET
ajst-30166	4	2	threaded	thread	VERB
ajst-30166	4	3	connection	connection	NOUN
ajst-30166	4	4	part	part	NOUN
ajst-30166	4	5	of	of	ADP
ajst-30166	4	6	the	the	DET
ajst-30166	4	7	drill	drill	NOUN
ajst-30166	4	8	string	string	NOUN
ajst-30166	4	9	is	be	AUX
ajst-30166	4	10	the	the	DET
ajst-30166	4	11	main	main	ADJ
ajst-30166	4	12	weak	weak	ADJ
ajst-30166	4	13	link	link	NOUN
ajst-30166	4	14	of	of	ADP
ajst-30166	4	15	the	the	DET
ajst-30166	4	16	drill	drill	NOUN
ajst-30166	4	17	string	string	NOUN
ajst-30166	4	18	,	,	PUNCT
ajst-30166	4	19	and	and	CCONJ
ajst-30166	4	20	improving	improve	VERB
ajst-30166	4	21	its	its	PRON
ajst-30166	4	22	torsional	torsional	ADJ
ajst-30166	4	23	resistance	resistance	NOUN
ajst-30166	4	24	performance	performance	NOUN
ajst-30166	4	25	is	be	AUX
ajst-30166	4	26	the	the	DET
ajst-30166	4	27	main	main	ADJ
ajst-30166	4	28	way	way	NOUN
ajst-30166	4	29	to	to	PART
ajst-30166	4	30	reduce	reduce	VERB
ajst-30166	4	31	the	the	DET
ajst-30166	4	32	risk	risk	NOUN
ajst-30166	4	33	of	of	ADP
ajst-30166	4	34	drill	drill	NOUN
ajst-30166	4	35	string	string	NOUN
ajst-30166	4	36	fracture	fracture	NOUN
ajst-30166	4	37	and	and	CCONJ
ajst-30166	4	38	failure	failure	NOUN
ajst-30166	4	39	.	.	PUNCT
ajst-30166	5	1	based	base	VERB
ajst-30166	5	2	on	on	ADP
ajst-30166	5	3	the	the	DET
ajst-30166	5	4	mechanical	mechanical	ADJ
ajst-30166	5	5	analysis	analysis	NOUN
ajst-30166	5	6	of	of	ADP
ajst-30166	5	7	the	the	DET
ajst-30166	5	8	torque	torque	NOUN
ajst-30166	5	9	load	load	NOUN
ajst-30166	5	10	of	of	ADP
ajst-30166	5	11	the	the	DET
ajst-30166	5	12	double	double	ADJ
ajst-30166	5	13	-	-	PUNCT
ajst-30166	5	14	shoulder	shoulder	NOUN
ajst-30166	5	15	drill	drill	NOUN
ajst-30166	5	16	string	string	NOUN
ajst-30166	5	17	thread	thread	NOUN
ajst-30166	5	18	in	in	ADP
ajst-30166	5	19	this	this	DET
ajst-30166	5	20	paper	paper	NOUN
ajst-30166	5	21	,	,	PUNCT
ajst-30166	5	22	a	a	DET
ajst-30166	5	23	double	double	ADJ
ajst-30166	5	24	-	-	PUNCT
ajst-30166	5	25	shoulder	shoulder	NOUN
ajst-30166	5	26	drill	drill	NOUN
ajst-30166	5	27	string	string	NOUN
ajst-30166	5	28	thread	thread	NOUN
ajst-30166	5	29	model	model	NOUN
ajst-30166	5	30	was	be	AUX
ajst-30166	5	31	established	establish	VERB
ajst-30166	5	32	.	.	PUNCT
ajst-30166	6	1	by	by	ADP
ajst-30166	6	2	comparing	compare	VERB
ajst-30166	6	3	it	it	PRON
ajst-30166	6	4	with	with	ADP
ajst-30166	6	5	the	the	DET
ajst-30166	6	6	stress	stress	NOUN
ajst-30166	6	7	collected	collect	VERB
ajst-30166	6	8	from	from	ADP
ajst-30166	6	9	experiments	experiment	NOUN
ajst-30166	6	10	,	,	PUNCT
ajst-30166	6	11	the	the	DET
ajst-30166	6	12	rationality	rationality	NOUN
ajst-30166	6	13	of	of	ADP
ajst-30166	6	14	the	the	DET
ajst-30166	6	15	simulation	simulation	NOUN
ajst-30166	6	16	model	model	NOUN
ajst-30166	6	17	was	be	AUX
ajst-30166	6	18	verified	verify	VERB
ajst-30166	6	19	.	.	PUNCT
ajst-30166	7	1	the	the	DET
ajst-30166	7	2	sensitivity	sensitivity	NOUN
ajst-30166	7	3	analysis	analysis	NOUN
ajst-30166	7	4	of	of	ADP
ajst-30166	7	5	the	the	DET
ajst-30166	7	6	torsional	torsional	ADJ
ajst-30166	7	7	resistance	resistance	NOUN
ajst-30166	7	8	performance	performance	NOUN
ajst-30166	7	9	of	of	ADP
ajst-30166	7	10	the	the	DET
ajst-30166	7	11	double	double	ADJ
ajst-30166	7	12	-	-	PUNCT
ajst-30166	7	13	shoulder	shoulder	NOUN
ajst-30166	7	14	joint	joint	ADJ
ajst-30166	7	15	thread	thread	NOUN
ajst-30166	7	16	under	under	ADP
ajst-30166	7	17	torque	torque	NOUN
ajst-30166	7	18	load	load	NOUN
ajst-30166	7	19	was	be	AUX
ajst-30166	7	20	studied	study	VERB
ajst-30166	7	21	,	,	PUNCT
ajst-30166	7	22	and	and	CCONJ
ajst-30166	7	23	its	its	PRON
ajst-30166	7	24	torsional	torsional	ADJ
ajst-30166	7	25	resistance	resistance	NOUN
ajst-30166	7	26	performance	performance	NOUN
ajst-30166	7	27	is	be	AUX
ajst-30166	7	28	better	well	ADJ
ajst-30166	7	29	than	than	ADP
ajst-30166	7	30	that	that	PRON
ajst-30166	7	31	of	of	ADP
ajst-30166	7	32	the	the	DET
ajst-30166	7	33	api	api	NOUN
ajst-30166	7	34	thread	thread	NOUN
ajst-30166	7	35	.	.	PUNCT
ajst-30166	8	1	the	the	DET
ajst-30166	8	2	sensitivity	sensitivity	NOUN
ajst-30166	8	3	analysis	analysis	NOUN
ajst-30166	8	4	of	of	ADP
ajst-30166	8	5	the	the	DET
ajst-30166	8	6	fatigue	fatigue	NOUN
ajst-30166	8	7	life	life	NOUN
ajst-30166	8	8	of	of	ADP
ajst-30166	8	9	the	the	DET
ajst-30166	8	10	double	double	ADJ
ajst-30166	8	11	-	-	PUNCT
ajst-30166	8	12	shoulder	shoulder	NOUN
ajst-30166	8	13	joint	joint	ADJ
ajst-30166	8	14	thread	thread	NOUN
ajst-30166	8	15	under	under	ADP
ajst-30166	8	16	torque	torque	NOUN
ajst-30166	8	17	load	load	NOUN
ajst-30166	8	18	was	be	AUX
ajst-30166	8	19	carried	carry	VERB
ajst-30166	8	20	out	out	ADP
ajst-30166	8	21	,	,	PUNCT
ajst-30166	8	22	and	and	CCONJ
ajst-30166	8	23	its	its	PRON
ajst-30166	8	24	torsional	torsional	ADJ
ajst-30166	8	25	resistance	resistance	NOUN
ajst-30166	8	26	performance	performance	NOUN
ajst-30166	8	27	is	be	AUX
ajst-30166	8	28	significantly	significantly	ADV
ajst-30166	8	29	improved	improve	VERB
ajst-30166	8	30	compared	compare	VERB
ajst-30166	8	31	with	with	ADP
ajst-30166	8	32	that	that	PRON
ajst-30166	8	33	of	of	ADP
ajst-30166	8	34	the	the	DET
ajst-30166	8	35	api	api	NOUN
ajst-30166	8	36	thread	thread	NOUN
ajst-30166	8	37	.	.	PUNCT
ajst-30166	9	1	the	the	DET
ajst-30166	9	2	research	research	NOUN
ajst-30166	9	3	results	result	NOUN
ajst-30166	9	4	show	show	VERB
ajst-30166	9	5	that	that	SCONJ
ajst-30166	9	6	the	the	DET
ajst-30166	9	7	torsional	torsional	ADJ
ajst-30166	9	8	resistance	resistance	NOUN
ajst-30166	9	9	performance	performance	NOUN
ajst-30166	9	10	of	of	ADP
ajst-30166	9	11	the	the	DET
ajst-30166	9	12	double	double	ADJ
ajst-30166	9	13	-	-	PUNCT
ajst-30166	9	14	shoulder	shoulder	NOUN
ajst-30166	9	15	joint	joint	NOUN
ajst-30166	9	16	is	be	AUX
ajst-30166	9	17	increased	increase	VERB
ajst-30166	9	18	by	by	ADP
ajst-30166	9	19	20.8	20.8	NUM
ajst-30166	9	20	%	%	NOUN
ajst-30166	9	21	compared	compare	VERB
ajst-30166	9	22	with	with	ADP
ajst-30166	9	23	that	that	PRON
ajst-30166	9	24	of	of	ADP
ajst-30166	9	25	the	the	DET
ajst-30166	9	26	api	api	NOUN
ajst-30166	9	27	joint	joint	NOUN
ajst-30166	9	28	,	,	PUNCT
ajst-30166	9	29	and	and	CCONJ
ajst-30166	9	30	the	the	DET
ajst-30166	9	31	fatigue	fatigue	NOUN
ajst-30166	9	32	life	life	NOUN
ajst-30166	9	33	is	be	AUX
ajst-30166	9	34	increased	increase	VERB
ajst-30166	9	35	by	by	ADP
ajst-30166	9	36	147	147	NUM
ajst-30166	9	37	%	%	NOUN
ajst-30166	9	38	.	.	PUNCT
ajst-30166	10	1	keywords	keyword	NOUN
ajst-30166	10	2	:	:	PUNCT
ajst-30166	10	3	drill	drill	NOUN
ajst-30166	10	4	string	string	NOUN
ajst-30166	10	5	thread	thread	NOUN
ajst-30166	10	6	;	;	PUNCT
ajst-30166	10	7	double	double	ADJ
ajst-30166	10	8	shoulder	shoulder	NOUN
ajst-30166	10	9	;	;	PUNCT
ajst-30166	10	10	mechanical	mechanical	ADJ
ajst-30166	10	11	analysis	analysis	NOUN
ajst-30166	10	12	;	;	PUNCT
ajst-30166	10	13	fatigue	fatigue	NOUN
ajst-30166	10	14	life	life	NOUN
ajst-30166	10	15	.	.	PUNCT
ajst-30166	11	1	1	1	X
ajst-30166	11	2	.	.	X
ajst-30166	11	3	introduction	introduction	NOUN
ajst-30166	11	4	under	under	ADP
ajst-30166	11	5	the	the	DET
ajst-30166	11	6	trend	trend	NOUN
ajst-30166	11	7	of	of	ADP
ajst-30166	11	8	the	the	DET
ajst-30166	11	9	continuous	continuous	ADJ
ajst-30166	11	10	in	in	ADP
ajst-30166	11	11	-	-	PUNCT
ajst-30166	11	12	depth	depth	NOUN
ajst-30166	11	13	development	development	NOUN
ajst-30166	11	14	of	of	ADP
ajst-30166	11	15	global	global	ADJ
ajst-30166	11	16	oil	oil	NOUN
ajst-30166	11	17	and	and	CCONJ
ajst-30166	11	18	gas	gas	NOUN
ajst-30166	11	19	exploration	exploration	NOUN
ajst-30166	11	20	and	and	CCONJ
ajst-30166	11	21	development	development	NOUN
ajst-30166	11	22	,	,	PUNCT
ajst-30166	11	23	deep	deep	ADV
ajst-30166	11	24	well	well	ADV
ajst-30166	11	25	and	and	CCONJ
ajst-30166	11	26	ultra	ultra	ADJ
ajst-30166	11	27	-	-	ADJ
ajst-30166	11	28	deep	deep	ADJ
ajst-30166	11	29	well	well	NOUN
ajst-30166	11	30	operations	operation	NOUN
ajst-30166	11	31	have	have	AUX
ajst-30166	11	32	become	become	VERB
ajst-30166	11	33	increasingly	increasingly	ADV
ajst-30166	11	34	common	common	ADJ
ajst-30166	11	35	.	.	PUNCT
ajst-30166	12	1	as	as	ADP
ajst-30166	12	2	the	the	DET
ajst-30166	12	3	core	core	NOUN
ajst-30166	12	4	component	component	NOUN
ajst-30166	12	5	of	of	ADP
ajst-30166	12	6	drilling	drilling	NOUN
ajst-30166	12	7	operations	operation	NOUN
ajst-30166	12	8	,	,	PUNCT
ajst-30166	12	9	the	the	DET
ajst-30166	12	10	performance	performance	NOUN
ajst-30166	12	11	of	of	ADP
ajst-30166	12	12	the	the	DET
ajst-30166	12	13	drill	drill	NOUN
ajst-30166	12	14	string	string	NOUN
ajst-30166	12	15	directly	directly	ADV
ajst-30166	12	16	affects	affect	VERB
ajst-30166	12	17	the	the	DET
ajst-30166	12	18	progress	progress	NOUN
ajst-30166	12	19	and	and	CCONJ
ajst-30166	12	20	benefits	benefit	NOUN
ajst-30166	12	21	of	of	ADP
ajst-30166	12	22	the	the	DET
ajst-30166	12	23	operations	operation	NOUN
ajst-30166	12	24	.	.	PUNCT
ajst-30166	13	1	however	however	ADV
ajst-30166	13	2	,	,	PUNCT
ajst-30166	13	3	the	the	DET
ajst-30166	13	4	problem	problem	NOUN
ajst-30166	13	5	of	of	ADP
ajst-30166	13	6	drill	drill	NOUN
ajst-30166	13	7	string	string	NOUN
ajst-30166	13	8	failure	failure	NOUN
ajst-30166	13	9	has	have	AUX
ajst-30166	13	10	always	always	ADV
ajst-30166	13	11	been	be	AUX
ajst-30166	13	12	a	a	DET
ajst-30166	13	13	difficult	difficult	ADJ
ajst-30166	13	14	issue	issue	NOUN
ajst-30166	13	15	to	to	PART
ajst-30166	13	16	solve	solve	VERB
ajst-30166	13	17	,	,	PUNCT
ajst-30166	13	18	plaguing	plague	VERB
ajst-30166	13	19	major	major	ADJ
ajst-30166	13	20	oil	oil	NOUN
ajst-30166	13	21	fields[1	fields[1	NOUN
ajst-30166	13	22	-	-	PUNCT
ajst-30166	13	23	2	2	NUM
ajst-30166	13	24	]	]	PUNCT
ajst-30166	13	25	.	.	PUNCT
ajst-30166	14	1	the	the	DET
ajst-30166	14	2	fracture	fracture	PROPN
ajst-30166	14	3	diagram	diagram	NOUN
ajst-30166	14	4	of	of	ADP
ajst-30166	14	5	the	the	DET
ajst-30166	14	6	drill	drill	NOUN
ajst-30166	14	7	string	string	NOUN
ajst-30166	14	8	is	be	AUX
ajst-30166	14	9	shown	show	VERB
ajst-30166	14	10	in	in	ADP
ajst-30166	14	11	fig.1	fig.1	PROPN
ajst-30166	14	12	according	accord	VERB
ajst-30166	14	13	to	to	ADP
ajst-30166	14	14	incomplete	incomplete	ADJ
ajst-30166	14	15	statistics	statistic	NOUN
ajst-30166	14	16	,	,	PUNCT
ajst-30166	14	17	drill	drill	NOUN
ajst-30166	14	18	string	string	NOUN
ajst-30166	14	19	failure	failure	NOUN
ajst-30166	14	20	accidents	accident	NOUN
ajst-30166	14	21	occur	occur	VERB
ajst-30166	14	22	frequently	frequently	ADV
ajst-30166	14	23	in	in	ADP
ajst-30166	14	24	oil	oil	NOUN
ajst-30166	14	25	fields	field	NOUN
ajst-30166	14	26	across	across	ADP
ajst-30166	14	27	the	the	DET
ajst-30166	14	28	country	country	NOUN
ajst-30166	14	29	every	every	DET
ajst-30166	14	30	year	year	NOUN
ajst-30166	14	31	,	,	PUNCT
ajst-30166	14	32	reaching	reach	VERB
ajst-30166	14	33	hundreds	hundred	NOUN
ajst-30166	14	34	of	of	ADP
ajst-30166	14	35	cases[3	cases[3	PROPN
ajst-30166	14	36	]	]	X
ajst-30166	14	37	.	.	PUNCT
ajst-30166	15	1	in	in	ADP
ajst-30166	15	2	the	the	DET
ajst-30166	15	3	oil	oil	NOUN
ajst-30166	15	4	fields	field	NOUN
ajst-30166	15	5	in	in	ADP
ajst-30166	15	6	western	western	ADJ
ajst-30166	15	7	china	china	PROPN
ajst-30166	15	8	,	,	PUNCT
ajst-30166	15	9	the	the	DET
ajst-30166	15	10	cost	cost	NOUN
ajst-30166	15	11	of	of	ADP
ajst-30166	15	12	a	a	DET
ajst-30166	15	13	single	single	ADJ
ajst-30166	15	14	drilling	drilling	NOUN
ajst-30166	15	15	operation	operation	NOUN
ajst-30166	15	16	can	can	AUX
ajst-30166	15	17	reach	reach	VERB
ajst-30166	15	18	tens	ten	NOUN
ajst-30166	15	19	of	of	ADP
ajst-30166	15	20	millions	million	NOUN
ajst-30166	15	21	or	or	CCONJ
ajst-30166	15	22	even	even	ADV
ajst-30166	15	23	hundreds	hundred	NOUN
ajst-30166	15	24	of	of	ADP
ajst-30166	15	25	millions	million	NOUN
ajst-30166	15	26	of	of	ADP
ajst-30166	15	27	yuan	yuan	NOUN
ajst-30166	15	28	.	.	PUNCT
ajst-30166	16	1	once	once	ADV
ajst-30166	16	2	the	the	DET
ajst-30166	16	3	wellbore	wellbore	NOUN
ajst-30166	16	4	is	be	AUX
ajst-30166	16	5	scrapped	scrap	VERB
ajst-30166	16	6	due	due	ADJ
ajst-30166	16	7	to	to	PART
ajst-30166	16	8	drill	drill	VERB
ajst-30166	16	9	string	string	NOUN
ajst-30166	16	10	failure	failure	NOUN
ajst-30166	16	11	,	,	PUNCT
ajst-30166	16	12	the	the	DET
ajst-30166	16	13	resulting	result	VERB
ajst-30166	16	14	economic	economic	ADJ
ajst-30166	16	15	losses	loss	NOUN
ajst-30166	16	16	are	be	AUX
ajst-30166	16	17	astronomical[4	astronomical[4	PROPN
ajst-30166	16	18	-	-	PUNCT
ajst-30166	16	19	5	5	NUM
ajst-30166	16	20	]	]	PUNCT
ajst-30166	16	21	.	.	PUNCT
ajst-30166	17	1	figure	figure	NOUN
ajst-30166	17	2	1	1	NUM
ajst-30166	17	3	.	.	PUNCT
ajst-30166	17	4	failure	failure	NOUN
ajst-30166	17	5	diagram	diagram	NOUN
ajst-30166	17	6	for	for	ADP
ajst-30166	17	7	drilling	drilling	NOUN
ajst-30166	17	8	tool	tool	NOUN
ajst-30166	17	9	joints	joint	NOUN
ajst-30166	17	10	according	accord	VERB
ajst-30166	17	11	to	to	ADP
ajst-30166	17	12	statistical	statistical	ADJ
ajst-30166	17	13	analysis	analysis	NOUN
ajst-30166	17	14	,	,	PUNCT
ajst-30166	17	15	the	the	DET
ajst-30166	17	16	threaded	thread	VERB
ajst-30166	17	17	connection	connection	NOUN
ajst-30166	17	18	part	part	NOUN
ajst-30166	17	19	of	of	ADP
ajst-30166	17	20	the	the	DET
ajst-30166	17	21	drill	drill	NOUN
ajst-30166	17	22	string	string	NOUN
ajst-30166	17	23	is	be	AUX
ajst-30166	17	24	the	the	DET
ajst-30166	17	25	main	main	ADJ
ajst-30166	17	26	weak	weak	ADJ
ajst-30166	17	27	link	link	NOUN
ajst-30166	17	28	of	of	ADP
ajst-30166	17	29	the	the	DET
ajst-30166	17	30	drill	drill	NOUN
ajst-30166	17	31	string	string	NOUN
ajst-30166	17	32	,	,	PUNCT
ajst-30166	17	33	and	and	CCONJ
ajst-30166	17	34	most	most	ADJ
ajst-30166	17	35	failure	failure	NOUN
ajst-30166	17	36	events	event	NOUN
ajst-30166	17	37	originate	originate	VERB
ajst-30166	17	38	from	from	ADP
ajst-30166	17	39	this	this	DET
ajst-30166	17	40	part[6	part[6	NOUN
ajst-30166	17	41	]	]	PUNCT
ajst-30166	17	42	.	.	PUNCT
ajst-30166	18	1	excessive	excessive	ADJ
ajst-30166	18	2	torque	torque	NOUN
ajst-30166	18	3	load	load	NOUN
ajst-30166	18	4	is	be	AUX
ajst-30166	18	5	the	the	DET
ajst-30166	18	6	main	main	ADJ
ajst-30166	18	7	factor	factor	NOUN
ajst-30166	18	8	leading	lead	VERB
ajst-30166	18	9	to	to	ADP
ajst-30166	18	10	the	the	DET
ajst-30166	18	11	failure	failure	NOUN
ajst-30166	18	12	of	of	ADP
ajst-30166	18	13	the	the	DET
ajst-30166	18	14	joint	joint	ADJ
ajst-30166	18	15	thread	thread	NOUN
ajst-30166	18	16	.	.	PUNCT
ajst-30166	19	1	with	with	ADP
ajst-30166	19	2	the	the	DET
ajst-30166	19	3	increase	increase	NOUN
ajst-30166	19	4	in	in	ADP
ajst-30166	19	5	the	the	DET
ajst-30166	19	6	operation	operation	NOUN
ajst-30166	19	7	depth	depth	NOUN
ajst-30166	19	8	,	,	PUNCT
ajst-30166	19	9	the	the	DET
ajst-30166	19	10	doubleshoulder	doubleshoulder	ADJ
ajst-30166	19	11	drill	drill	NOUN
ajst-30166	19	12	string	string	NOUN
ajst-30166	19	13	thread	thread	NOUN
ajst-30166	19	14	has	have	AUX
ajst-30166	19	15	been	be	AUX
ajst-30166	19	16	widely	widely	ADV
ajst-30166	19	17	used	use	VERB
ajst-30166	19	18	in	in	ADP
ajst-30166	19	19	the	the	DET
ajst-30166	19	20	industry	industry	NOUN
ajst-30166	19	21	because	because	SCONJ
ajst-30166	19	22	it	it	PRON
ajst-30166	19	23	can	can	AUX
ajst-30166	19	24	effectively	effectively	ADV
ajst-30166	19	25	improve	improve	VERB
ajst-30166	19	26	the	the	DET
ajst-30166	19	27	torsional	torsional	ADJ
ajst-30166	19	28	strength	strength	NOUN
ajst-30166	19	29	of	of	ADP
ajst-30166	19	30	the	the	DET
ajst-30166	19	31	thread	thread	NOUN
ajst-30166	19	32	and	and	CCONJ
ajst-30166	19	33	balance	balance	VERB
ajst-30166	19	34	the	the	DET
ajst-30166	19	35	load	load	NOUN
ajst-30166	19	36	distribution[7	distribution[7	PROPN
ajst-30166	19	37	]	]	PUNCT
ajst-30166	19	38	.	.	PUNCT
ajst-30166	20	1	however	however	ADV
ajst-30166	20	2	,	,	PUNCT
ajst-30166	20	3	it	it	PRON
ajst-30166	20	4	can	can	AUX
ajst-30166	20	5	not	not	PART
ajst-30166	20	6	be	be	AUX
ajst-30166	20	7	ignored	ignore	VERB
ajst-30166	20	8	that	that	SCONJ
ajst-30166	20	9	there	there	PRON
ajst-30166	20	10	are	be	VERB
ajst-30166	20	11	still	still	ADV
ajst-30166	20	12	many	many	ADJ
ajst-30166	20	13	shortcomings	shortcoming	NOUN
ajst-30166	20	14	in	in	ADP
ajst-30166	20	15	the	the	DET
ajst-30166	20	16	current	current	ADJ
ajst-30166	20	17	research	research	NOUN
ajst-30166	20	18	on	on	ADP
ajst-30166	20	19	the	the	DET
ajst-30166	20	20	double	double	ADJ
ajst-30166	20	21	-	-	PUNCT
ajst-30166	20	22	shoulder	shoulder	NOUN
ajst-30166	20	23	drill	drill	NOUN
ajst-30166	20	24	string	string	NOUN
ajst-30166	20	25	thread[8	thread[8	PROPN
ajst-30166	20	26	]	]	PUNCT
ajst-30166	20	27	.	.	PUNCT
ajst-30166	21	1	on	on	ADP
ajst-30166	21	2	the	the	DET
ajst-30166	21	3	one	one	NUM
ajst-30166	21	4	hand	hand	NOUN
ajst-30166	21	5	,	,	PUNCT
ajst-30166	21	6	the	the	DET
ajst-30166	21	7	mechanical	mechanical	ADJ
ajst-30166	21	8	analysis	analysis	NOUN
ajst-30166	21	9	is	be	AUX
ajst-30166	21	10	difficult	difficult	ADJ
ajst-30166	21	11	to	to	PART
ajst-30166	21	12	accurately	accurately	ADV
ajst-30166	21	13	simulate	simulate	VERB
ajst-30166	21	14	the	the	DET
ajst-30166	21	15	complex	complex	ADJ
ajst-30166	21	16	and	and	CCONJ
ajst-30166	21	17	changeable	changeable	ADJ
ajst-30166	21	18	load	load	NOUN
ajst-30166	21	19	conditions	condition	NOUN
ajst-30166	21	20	downhole	downhole	NOUN
ajst-30166	21	21	.	.	PUNCT
ajst-30166	22	1	for	for	ADP
ajst-30166	22	2	example	example	NOUN
ajst-30166	22	3	,	,	PUNCT
ajst-30166	22	4	the	the	DET
ajst-30166	22	5	combined	combine	VERB
ajst-30166	22	6	effects	effect	NOUN
ajst-30166	22	7	of	of	ADP
ajst-30166	22	8	extreme	extreme	ADJ
ajst-30166	22	9	loads	load	NOUN
ajst-30166	22	10	such	such	ADJ
ajst-30166	22	11	as	as	ADP
ajst-30166	22	12	bending	bend	VERB
ajst-30166	22	13	moment	moment	NOUN
ajst-30166	22	14	,	,	PUNCT
ajst-30166	22	15	torque	torque	NOUN
ajst-30166	22	16	,	,	PUNCT
ajst-30166	22	17	erosion	erosion	NOUN
ajst-30166	22	18	,	,	PUNCT
ajst-30166	22	19	friction	friction	NOUN
ajst-30166	22	20	and	and	CCONJ
ajst-30166	22	21	vibration	vibration	NOUN
ajst-30166	22	22	are	be	AUX
ajst-30166	22	23	often	often	ADV
ajst-30166	22	24	simplified	simplify	VERB
ajst-30166	22	25	or	or	CCONJ
ajst-30166	22	26	ignored	ignore	VERB
ajst-30166	22	27	.	.	PUNCT
ajst-30166	23	1	on	on	ADP
ajst-30166	23	2	the	the	DET
ajst-30166	23	3	other	other	ADJ
ajst-30166	23	4	hand	hand	NOUN
ajst-30166	23	5	,	,	PUNCT
ajst-30166	23	6	the	the	DET
ajst-30166	23	7	accuracy	accuracy	NOUN
ajst-30166	23	8	of	of	ADP
ajst-30166	23	9	the	the	DET
ajst-30166	23	10	life	life	NOUN
ajst-30166	23	11	calculation	calculation	NOUN
ajst-30166	23	12	method	method	NOUN
ajst-30166	23	13	is	be	AUX
ajst-30166	23	14	not	not	PART
ajst-30166	23	15	good	good	ADJ
ajst-30166	23	16	enough	enough	ADV
ajst-30166	23	17	,	,	PUNCT
ajst-30166	23	18	and	and	CCONJ
ajst-30166	23	19	it	it	PRON
ajst-30166	23	20	can	can	AUX
ajst-30166	23	21	not	not	PART
ajst-30166	23	22	provide	provide	VERB
ajst-30166	23	23	a	a	DET
ajst-30166	23	24	reliable	reliable	ADJ
ajst-30166	23	25	reference	reference	NOUN
ajst-30166	23	26	for	for	ADP
ajst-30166	23	27	the	the	DET
ajst-30166	23	28	service	service	NOUN
ajst-30166	23	29	life	life	NOUN
ajst-30166	23	30	in	in	ADP
ajst-30166	23	31	actual	actual	ADJ
ajst-30166	23	32	operations[9	operations[9	NOUN
ajst-30166	23	33	-	-	SYM
ajst-30166	23	34	10	10	NUM
ajst-30166	23	35	]	]	PUNCT
ajst-30166	23	36	.	.	PUNCT
ajst-30166	24	1	in	in	ADP
ajst-30166	24	2	this	this	DET
ajst-30166	24	3	paper	paper	NOUN
ajst-30166	24	4	,	,	PUNCT
ajst-30166	24	5	through	through	ADP
ajst-30166	24	6	the	the	DET
ajst-30166	24	7	analysis	analysis	NOUN
ajst-30166	24	8	of	of	ADP
ajst-30166	24	9	the	the	DET
ajst-30166	24	10	mechanical	mechanical	ADJ
ajst-30166	24	11	analysis	analysis	NOUN
ajst-30166	24	12	of	of	ADP
ajst-30166	24	13	the	the	DET
ajst-30166	24	14	double	double	ADJ
ajst-30166	24	15	-	-	PUNCT
ajst-30166	24	16	shoulder	shoulder	NOUN
ajst-30166	24	17	drill	drill	NOUN
ajst-30166	24	18	string	string	NOUN
ajst-30166	24	19	thread	thread	NOUN
ajst-30166	24	20	under	under	ADP
ajst-30166	24	21	actual	actual	ADJ
ajst-30166	24	22	working	work	VERB
ajst-30166	24	23	conditions	condition	NOUN
ajst-30166	24	24	,	,	PUNCT
ajst-30166	24	25	the	the	DET
ajst-30166	24	26	mechanical	mechanical	ADJ
ajst-30166	24	27	performance	performance	NOUN
ajst-30166	24	28	under	under	ADP
ajst-30166	24	29	torque	torque	NOUN
ajst-30166	24	30	load	load	NOUN
ajst-30166	24	31	is	be	AUX
ajst-30166	24	32	deeply	deeply	ADV
ajst-30166	24	33	explored	explore	VERB
ajst-30166	24	34	.	.	PUNCT
ajst-30166	25	1	at	at	ADP
ajst-30166	25	2	the	the	DET
ajst-30166	25	3	same	same	ADJ
ajst-30166	25	4	time	time	NOUN
ajst-30166	25	5	,	,	PUNCT
ajst-30166	25	6	combined	combine	VERB
ajst-30166	25	7	with	with	ADP
ajst-30166	25	8	the	the	DET
ajst-30166	25	9	failure	failure	NOUN
ajst-30166	25	10	cases	case	NOUN
ajst-30166	25	11	in	in	ADP
ajst-30166	25	12	actual	actual	ADJ
ajst-30166	25	13	production	production	NOUN
ajst-30166	25	14	,	,	PUNCT
ajst-30166	25	15	the	the	DET
ajst-30166	25	16	root	root	NOUN
ajst-30166	25	17	causes	cause	NOUN
ajst-30166	25	18	of	of	ADP
ajst-30166	25	19	the	the	DET
ajst-30166	25	20	failure	failure	NOUN
ajst-30166	25	21	are	be	AUX
ajst-30166	25	22	analyzed	analyze	VERB
ajst-30166	25	23	,	,	PUNCT
ajst-30166	25	24	aiming	aim	VERB
ajst-30166	25	25	to	to	PART
ajst-30166	25	26	lay	lay	VERB
ajst-30166	25	27	a	a	DET
ajst-30166	25	28	solid	solid	ADJ
ajst-30166	25	29	theoretical	theoretical	ADJ
ajst-30166	25	30	foundation	foundation	NOUN
ajst-30166	25	31	for	for	ADP
ajst-30166	25	32	the	the	DET
ajst-30166	25	33	optimized	optimize	VERB
ajst-30166	25	34	design	design	NOUN
ajst-30166	25	35	and	and	CCONJ
ajst-30166	25	36	reasonable	reasonable	ADJ
ajst-30166	25	37	use	use	NOUN
ajst-30166	25	38	of	of	ADP
ajst-30166	25	39	the	the	DET
ajst-30166	25	40	double	double	ADJ
ajst-30166	25	41	-	-	PUNCT
ajst-30166	25	42	shoulder	shoulder	NOUN
ajst-30166	25	43	drill	drill	NOUN
ajst-30166	25	44	string	string	NOUN
ajst-30166	25	45	thread	thread	NOUN
ajst-30166	25	46	.	.	PUNCT
ajst-30166	26	1	2	2	X
ajst-30166	26	2	.	.	X
ajst-30166	26	3	finite	finite	PROPN
ajst-30166	26	4	element	element	NOUN
ajst-30166	26	5	analysis	analysis	NOUN
ajst-30166	26	6	of	of	ADP
ajst-30166	26	7	drilling	drilling	NOUN
ajst-30166	26	8	tool	tool	NOUN
ajst-30166	26	9	threads	thread	VERB
ajst-30166	26	10	2.1	2.1	NUM
ajst-30166	26	11	.	.	PUNCT
ajst-30166	27	1	equation	equation	NOUN
ajst-30166	27	2	for	for	ADP
ajst-30166	27	3	threaded	threaded	ADJ
ajst-30166	27	4	connection	connection	NOUN
ajst-30166	27	5	of	of	ADP
ajst-30166	27	6	drilling	drilling	NOUN
ajst-30166	27	7	tools	tool	NOUN
ajst-30166	27	8	the	the	DET
ajst-30166	27	9	drilling	drilling	NOUN
ajst-30166	27	10	tool	tool	NOUN
ajst-30166	27	11	threaded	thread	VERB
ajst-30166	27	12	connection	connection	NOUN
ajst-30166	27	13	is	be	AUX
ajst-30166	27	14	preloaded	preloade	VERB
ajst-30166	27	15	by	by	ADP
ajst-30166	27	16	suitable	suitable	ADJ
ajst-30166	27	17	upper	upper	ADJ
ajst-30166	27	18	buckle	buckle	NOUN
ajst-30166	27	19	torque	torque	NOUN
ajst-30166	27	20	to	to	PART
ajst-30166	27	21	ensure	ensure	VERB
ajst-30166	27	22	the	the	DET
ajst-30166	27	23	sealing	sealing	NOUN
ajst-30166	27	24	performance	performance	NOUN
ajst-30166	27	25	of	of	ADP
ajst-30166	27	26	the	the	DET
ajst-30166	27	27	joint	joint	ADJ
ajst-30166	27	28	threads	thread	NOUN
ajst-30166	27	29	,	,	PUNCT
ajst-30166	27	30	enhance	enhance	VERB
ajst-30166	27	31	the	the	DET
ajst-30166	27	32	resistance	resistance	NOUN
ajst-30166	27	33	of	of	ADP
ajst-30166	27	34	the	the	DET
ajst-30166	27	35	joint	joint	NOUN
ajst-30166	27	36	to	to	ADP
ajst-30166	27	37	the	the	DET
ajst-30166	27	38	tensile	tensile	NOUN
ajst-30166	27	39	load	load	NOUN
ajst-30166	27	40	effect	effect	NOUN
ajst-30166	27	41	,	,	PUNCT
ajst-30166	27	42	and	and	CCONJ
ajst-30166	27	43	prevent	prevent	VERB
ajst-30166	27	44	the	the	DET
ajst-30166	27	45	threads	thread	NOUN
ajst-30166	27	46	from	from	ADP
ajst-30166	27	47	unbuckling	unbuckle	VERB
ajst-30166	27	48	under	under	ADP
ajst-30166	27	49	the	the	DET
ajst-30166	27	50	tensile	tensile	NOUN
ajst-30166	27	51	load	load	NOUN
ajst-30166	27	52	,	,	PUNCT
ajst-30166	27	53	so	so	ADV
ajst-30166	27	54	determining	determine	VERB
ajst-30166	27	55	the	the	DET
ajst-30166	27	56	suitable	suitable	ADJ
ajst-30166	27	57	10	10	NUM
ajst-30166	27	58	upper	upper	ADJ
ajst-30166	27	59	buckle	buckle	NOUN
ajst-30166	27	60	torque	torque	NOUN
ajst-30166	27	61	is	be	AUX
ajst-30166	27	62	one	one	NUM
ajst-30166	27	63	of	of	ADP
ajst-30166	27	64	the	the	DET
ajst-30166	27	65	keys	key	NOUN
ajst-30166	27	66	to	to	ADP
ajst-30166	27	67	the	the	DET
ajst-30166	27	68	design	design	NOUN
ajst-30166	27	69	of	of	ADP
ajst-30166	27	70	the	the	DET
ajst-30166	27	71	drilling	drilling	NOUN
ajst-30166	27	72	tool	tool	NOUN
ajst-30166	27	73	joints	joint	NOUN
ajst-30166	27	74	.	.	PUNCT
ajst-30166	28	1	the	the	DET
ajst-30166	28	2	torque	torque	NOUN
ajst-30166	28	3	balance	balance	NOUN
ajst-30166	28	4	equation	equation	NOUN
ajst-30166	28	5	(	(	PUNCT
ajst-30166	28	6	1	1	X
ajst-30166	28	7	)	)	PUNCT
ajst-30166	28	8	obtained	obtain	VERB
ajst-30166	28	9	from	from	ADP
ajst-30166	28	10	the	the	DET
ajst-30166	28	11	deformation	deformation	NOUN
ajst-30166	28	12	coordination	coordination	NOUN
ajst-30166	28	13	formula	formula	NOUN
ajst-30166	28	14	shows	show	VERB
ajst-30166	28	15	that	that	SCONJ
ajst-30166	28	16	when	when	SCONJ
ajst-30166	28	17	the	the	DET
ajst-30166	28	18	drilling	drilling	NOUN
ajst-30166	28	19	tool	tool	NOUN
ajst-30166	28	20	male	male	ADJ
ajst-30166	28	21	buckle	buckle	NOUN
ajst-30166	28	22	is	be	AUX
ajst-30166	28	23	subjected	subject	VERB
ajst-30166	28	24	to	to	ADP
ajst-30166	28	25	torque	torque	NOUN
ajst-30166	28	26	,	,	PUNCT
ajst-30166	28	27	the	the	DET
ajst-30166	28	28	external	external	ADJ
ajst-30166	28	29	torque	torque	NOUN
ajst-30166	28	30	𝑇	𝑇	PROPN
ajst-30166	28	31	is	be	AUX
ajst-30166	28	32	equal	equal	ADJ
ajst-30166	28	33	to	to	ADP
ajst-30166	28	34	the	the	DET
ajst-30166	28	35	sum	sum	NOUN
ajst-30166	28	36	of	of	ADP
ajst-30166	28	37	the	the	DET
ajst-30166	28	38	frictional	frictional	ADJ
ajst-30166	28	39	torque	torque	NOUN
ajst-30166	28	40	𝑇	𝑇	PROPN
ajst-30166	28	41	on	on	ADP
ajst-30166	28	42	the	the	DET
ajst-30166	28	43	thread	thread	NOUN
ajst-30166	28	44	engaging	engage	VERB
ajst-30166	28	45	surface	surface	NOUN
ajst-30166	28	46	and	and	CCONJ
ajst-30166	28	47	the	the	DET
ajst-30166	28	48	frictional	frictional	ADJ
ajst-30166	28	49	torque	torque	NOUN
ajst-30166	28	50	𝑇	𝑇	PROPN
ajst-30166	28	51	on	on	ADP
ajst-30166	28	52	the	the	DET
ajst-30166	28	53	contact	contact	NOUN
ajst-30166	28	54	surface	surface	NOUN
ajst-30166	28	55	of	of	ADP
ajst-30166	28	56	the	the	DET
ajst-30166	28	57	table	table	NOUN
ajst-30166	28	58	shoulder	shoulder	NOUN
ajst-30166	28	59	,	,	PUNCT
ajst-30166	28	60	and	and	CCONJ
ajst-30166	28	61	the	the	DET
ajst-30166	28	62	sum	sum	NOUN
ajst-30166	28	63	of	of	ADP
ajst-30166	28	64	axial	axial	ADJ
ajst-30166	28	65	force	force	NOUN
ajst-30166	28	66	𝐹	𝐹	PROPN
ajst-30166	28	67	on	on	ADP
ajst-30166	28	68	the	the	DET
ajst-30166	28	69	thread	thread	NOUN
ajst-30166	28	70	engaging	engage	VERB
ajst-30166	28	71	surface	surface	NOUN
ajst-30166	28	72	is	be	AUX
ajst-30166	28	73	also	also	ADV
ajst-30166	28	74	equal	equal	ADJ
ajst-30166	28	75	to	to	ADP
ajst-30166	28	76	the	the	DET
ajst-30166	28	77	combined	combine	VERB
ajst-30166	28	78	force	force	NOUN
ajst-30166	28	79	𝐹	𝐹	PROPN
ajst-30166	28	80	applied	apply	VERB
ajst-30166	28	81	on	on	ADP
ajst-30166	28	82	the	the	DET
ajst-30166	28	83	table	table	NOUN
ajst-30166	28	84	shoulder[11	shoulder[11	NOUN
ajst-30166	28	85	]	]	PUNCT
ajst-30166	28	86	.	.	PUNCT
ajst-30166	29	1	fig.2	fig.2	PROPN
ajst-30166	29	2	shows	show	VERB
ajst-30166	29	3	the	the	DET
ajst-30166	29	4	mechanical	mechanical	ADJ
ajst-30166	29	5	characteristics	characteristic	NOUN
ajst-30166	29	6	of	of	ADP
ajst-30166	29	7	a	a	DET
ajst-30166	29	8	variable	variable	ADJ
ajst-30166	29	9	tooth	tooth	NOUN
ajst-30166	29	10	height	height	NOUN
ajst-30166	29	11	double	double	ADJ
ajst-30166	29	12	shoulder	shoulder	NOUN
ajst-30166	29	13	drilling	drilling	NOUN
ajst-30166	29	14	tool	tool	NOUN
ajst-30166	29	15	thread	thread	NOUN
ajst-30166	29	16	under	under	ADP
ajst-30166	29	17	torque	torque	NOUN
ajst-30166	29	18	loading	loading	NOUN
ajst-30166	29	19	.	.	PUNCT
ajst-30166	30	1	𝐹	𝐹	PROPN
ajst-30166	30	2	𝐹	𝐹	PROPN
ajst-30166	30	3	，	，	PROPN
ajst-30166	30	4	𝑇	𝑇	PROPN
ajst-30166	30	5	𝑇	𝑇	PROPN
ajst-30166	30	6	𝑇	𝑇	PROPN
ajst-30166	30	7	(	(	PUNCT
ajst-30166	30	8	1	1	NUM
ajst-30166	30	9	)	)	PUNCT
ajst-30166	31	1	𝐹	𝐹	PROPN
ajst-30166	32	1	𝐹	𝐹	PROPN
ajst-30166	33	1	𝐹	𝐹	PROPN
ajst-30166	34	1	(	(	PUNCT
ajst-30166	34	2	2	2	X
ajst-30166	34	3	)	)	PUNCT
ajst-30166	34	4	𝑇	𝑇	PROPN
ajst-30166	34	5	𝑇	𝑇	PROPN
ajst-30166	34	6	(	(	PUNCT
ajst-30166	34	7	3	3	NUM
ajst-30166	34	8	)	)	PUNCT
ajst-30166	34	9	where	where	SCONJ
ajst-30166	34	10	𝑛—the	𝑛—the	DET
ajst-30166	34	11	total	total	ADJ
ajst-30166	34	12	number	number	NOUN
ajst-30166	34	13	of	of	ADP
ajst-30166	34	14	thread	thread	NOUN
ajst-30166	34	15	engagement	engagement	NOUN
ajst-30166	34	16	turns	turn	VERB
ajst-30166	34	17	;	;	PUNCT
ajst-30166	34	18	𝑖	𝑖	X
ajst-30166	34	19	—	—	PUNCT
ajst-30166	34	20	number	number	NOUN
ajst-30166	34	21	of	of	ADP
ajst-30166	34	22	threaded	thread	VERB
ajst-30166	34	23	turns	turn	NOUN
ajst-30166	34	24	;	;	PUNCT
ajst-30166	34	25	𝐹	𝐹	PROPN
ajst-30166	34	26	—	—	PUNCT
ajst-30166	34	27	axial	axial	ADJ
ajst-30166	34	28	forces	force	NOUN
ajst-30166	34	29	on	on	ADP
ajst-30166	34	30	the	the	DET
ajst-30166	34	31	shoulder	shoulder	NOUN
ajst-30166	34	32	surface	surface	NOUN
ajst-30166	34	33	;	;	PUNCT
ajst-30166	34	34	𝑇	𝑇	PROPN
ajst-30166	34	35	—	—	PUNCT
ajst-30166	34	36	torque	torque	NOUN
ajst-30166	34	37	generated	generate	VERB
ajst-30166	34	38	by	by	ADP
ajst-30166	34	39	the	the	DET
ajst-30166	34	40	shoulder	shoulder	NOUN
ajst-30166	34	41	.	.	PUNCT
ajst-30166	35	1	figure	figure	NOUN
ajst-30166	35	2	1	1	NUM
ajst-30166	35	3	.	.	PUNCT
ajst-30166	36	1	analysis	analysis	NOUN
ajst-30166	36	2	of	of	ADP
ajst-30166	36	3	torque	torque	NOUN
ajst-30166	36	4	forces	force	NOUN
ajst-30166	36	5	on	on	ADP
ajst-30166	36	6	double	double	ADJ
ajst-30166	36	7	shoulder	shoulder	NOUN
ajst-30166	36	8	drilling	drilling	NOUN
ajst-30166	36	9	tool	tool	NOUN
ajst-30166	36	10	joints	joint	NOUN
ajst-30166	36	11	.	.	PUNCT
ajst-30166	37	1	the	the	DET
ajst-30166	37	2	figure	figure	NOUN
ajst-30166	37	3	indicates	indicate	VERB
ajst-30166	37	4	that	that	SCONJ
ajst-30166	37	5	the	the	DET
ajst-30166	37	6	plane	plane	NOUN
ajst-30166	37	7	is	be	AUX
ajst-30166	37	8	facing	face	VERB
ajst-30166	37	9	inward	inward	ADV
ajst-30166	37	10	,	,	PUNCT
ajst-30166	37	11	indicates	indicate	VERB
ajst-30166	37	12	that	that	SCONJ
ajst-30166	37	13	the	the	DET
ajst-30166	37	14	plane	plane	NOUN
ajst-30166	37	15	is	be	AUX
ajst-30166	37	16	facing	face	VERB
ajst-30166	37	17	outward	outward	ADV
ajst-30166	37	18	,	,	PUNCT
ajst-30166	37	19	and	and	CCONJ
ajst-30166	37	20	is	be	AUX
ajst-30166	37	21	a	a	DET
ajst-30166	37	22	fixed	fix	VERB
ajst-30166	37	23	boundary	boundary	ADJ
ajst-30166	37	24	condition	condition	NOUN
ajst-30166	37	25	.	.	PUNCT
ajst-30166	38	1	it	it	PRON
ajst-30166	38	2	can	can	AUX
ajst-30166	38	3	be	be	AUX
ajst-30166	38	4	seen	see	VERB
ajst-30166	38	5	that	that	SCONJ
ajst-30166	38	6	the	the	DET
ajst-30166	38	7	shoulder	shoulder	NOUN
ajst-30166	38	8	bears	bear	VERB
ajst-30166	38	9	part	part	NOUN
ajst-30166	38	10	of	of	ADP
ajst-30166	38	11	the	the	DET
ajst-30166	38	12	torque	torque	NOUN
ajst-30166	38	13	for	for	ADP
ajst-30166	38	14	the	the	DET
ajst-30166	38	15	thread	thread	NOUN
ajst-30166	38	16	,	,	PUNCT
ajst-30166	38	17	and	and	CCONJ
ajst-30166	38	18	the	the	DET
ajst-30166	38	19	double	double	ADJ
ajst-30166	38	20	shoulder	shoulder	NOUN
ajst-30166	38	21	structure	structure	NOUN
ajst-30166	38	22	can	can	AUX
ajst-30166	38	23	increase	increase	VERB
ajst-30166	38	24	the	the	DET
ajst-30166	38	25	contact	contact	NOUN
ajst-30166	38	26	area	area	NOUN
ajst-30166	38	27	of	of	ADP
ajst-30166	38	28	the	the	DET
ajst-30166	38	29	shoulder	shoulder	NOUN
ajst-30166	38	30	,	,	PUNCT
ajst-30166	38	31	improve	improve	VERB
ajst-30166	38	32	the	the	DET
ajst-30166	38	33	friction	friction	NOUN
ajst-30166	38	34	torque	torque	NOUN
ajst-30166	38	35	𝑇	𝑇	PROPN
ajst-30166	38	36	and	and	CCONJ
ajst-30166	38	37	axial	axial	ADJ
ajst-30166	38	38	force	force	NOUN
ajst-30166	38	39	𝐹	𝐹	PROPN
ajst-30166	38	40	on	on	ADP
ajst-30166	38	41	the	the	DET
ajst-30166	38	42	shoulder	shoulder	NOUN
ajst-30166	38	43	surface	surface	NOUN
ajst-30166	38	44	,	,	PUNCT
ajst-30166	38	45	and	and	CCONJ
ajst-30166	38	46	reduce	reduce	VERB
ajst-30166	38	47	the	the	DET
ajst-30166	38	48	friction	friction	NOUN
ajst-30166	38	49	torque	torque	NOUN
ajst-30166	38	50	𝑇	𝑇	PROPN
ajst-30166	38	51	and	and	CCONJ
ajst-30166	38	52	axial	axial	ADJ
ajst-30166	38	53	force	force	NOUN
ajst-30166	38	54	𝐹	𝐹	PROPN
ajst-30166	38	55	between	between	ADP
ajst-30166	38	56	the	the	DET
ajst-30166	38	57	thread	thread	NOUN
ajst-30166	38	58	engaging	engage	VERB
ajst-30166	38	59	surfaces	surface	NOUN
ajst-30166	38	60	.	.	PUNCT
ajst-30166	39	1	2.2	2.2	NUM
ajst-30166	39	2	.	.	PUNCT
ajst-30166	39	3	three	three	NUM
ajst-30166	39	4	-	-	PUNCT
ajst-30166	39	5	dimensional	dimensional	ADJ
ajst-30166	39	6	finite	finite	ADJ
ajst-30166	39	7	element	element	NOUN
ajst-30166	39	8	modeling	modeling	NOUN
ajst-30166	39	9	of	of	ADP
ajst-30166	39	10	drilling	drill	VERB
ajst-30166	39	11	tool	tool	NOUN
ajst-30166	39	12	threads	thread	NOUN
ajst-30166	39	13	in	in	ADP
ajst-30166	39	14	order	order	NOUN
ajst-30166	39	15	to	to	PART
ajst-30166	39	16	better	well	ADV
ajst-30166	39	17	simulate	simulate	VERB
ajst-30166	39	18	the	the	DET
ajst-30166	39	19	contact	contact	NOUN
ajst-30166	39	20	of	of	ADP
ajst-30166	39	21	the	the	DET
ajst-30166	39	22	threads	thread	NOUN
ajst-30166	39	23	of	of	ADP
ajst-30166	39	24	the	the	DET
ajst-30166	39	25	joint	joint	NOUN
ajst-30166	39	26	of	of	ADP
ajst-30166	39	27	the	the	DET
ajst-30166	39	28	drilling	drilling	NOUN
ajst-30166	39	29	tool	tool	NOUN
ajst-30166	39	30	,	,	PUNCT
ajst-30166	39	31	the	the	DET
ajst-30166	39	32	3d	3d	PROPN
ajst-30166	39	33	model	model	NOUN
ajst-30166	39	34	of	of	ADP
ajst-30166	39	35	the	the	DET
ajst-30166	39	36	external	external	ADJ
ajst-30166	39	37	threads	thread	NOUN
ajst-30166	39	38	of	of	ADP
ajst-30166	39	39	the	the	DET
ajst-30166	39	40	pipe	pipe	NOUN
ajst-30166	39	41	body	body	NOUN
ajst-30166	39	42	and	and	CCONJ
ajst-30166	39	43	the	the	DET
ajst-30166	39	44	internal	internal	ADJ
ajst-30166	39	45	threads	thread	NOUN
ajst-30166	39	46	of	of	ADP
ajst-30166	39	47	the	the	DET
ajst-30166	39	48	coupling	coupling	NOUN
ajst-30166	39	49	is	be	AUX
ajst-30166	39	50	established	establish	VERB
ajst-30166	39	51	with	with	ADP
ajst-30166	39	52	the	the	DET
ajst-30166	39	53	help	help	NOUN
ajst-30166	39	54	of	of	ADP
ajst-30166	39	55	3d	3d	NUM
ajst-30166	39	56	drawing	drawing	NOUN
ajst-30166	39	57	software	software	NOUN
ajst-30166	39	58	.	.	PUNCT
ajst-30166	40	1	after	after	SCONJ
ajst-30166	40	2	the	the	DET
ajst-30166	40	3	modeling	modeling	NOUN
ajst-30166	40	4	of	of	ADP
ajst-30166	40	5	the	the	DET
ajst-30166	40	6	external	external	ADJ
ajst-30166	40	7	and	and	CCONJ
ajst-30166	40	8	internal	internal	ADJ
ajst-30166	40	9	threads	thread	NOUN
ajst-30166	40	10	is	be	AUX
ajst-30166	40	11	completed	complete	VERB
ajst-30166	40	12	,	,	PUNCT
ajst-30166	40	13	the	the	DET
ajst-30166	40	14	fit	fit	NOUN
ajst-30166	40	15	is	be	AUX
ajst-30166	40	16	set	set	VERB
ajst-30166	40	17	in	in	ADP
ajst-30166	40	18	the	the	DET
ajst-30166	40	19	3d	3d	NOUN
ajst-30166	40	20	drawing	drawing	NOUN
ajst-30166	40	21	software	software	NOUN
ajst-30166	40	22	for	for	ADP
ajst-30166	40	23	assembly	assembly	NOUN
ajst-30166	40	24	,	,	PUNCT
ajst-30166	40	25	and	and	CCONJ
ajst-30166	40	26	the	the	DET
ajst-30166	40	27	assembly	assembly	NOUN
ajst-30166	40	28	is	be	AUX
ajst-30166	40	29	imported	import	VERB
ajst-30166	40	30	into	into	ADP
ajst-30166	40	31	the	the	DET
ajst-30166	40	32	finite	finite	ADJ
ajst-30166	40	33	element	element	NOUN
ajst-30166	40	34	software	software	NOUN
ajst-30166	40	35	for	for	ADP
ajst-30166	40	36	meshing	meshing	NOUN
ajst-30166	40	37	.	.	PUNCT
ajst-30166	41	1	(	(	PUNCT
ajst-30166	41	2	1	1	X
ajst-30166	41	3	)	)	PUNCT
ajst-30166	41	4	api	api	NOUN
ajst-30166	41	5	threads	thread	NOUN
ajst-30166	41	6	taking	take	VERB
ajst-30166	41	7	the	the	DET
ajst-30166	41	8	7	7	NUM
ajst-30166	41	9	-	-	PUNCT
ajst-30166	41	10	inch	inch	NOUN
ajst-30166	41	11	api	api	NOUN
ajst-30166	41	12	drilling	drilling	NOUN
ajst-30166	41	13	tool	tool	NOUN
ajst-30166	41	14	joint	joint	ADJ
ajst-30166	41	15	thread	thread	NOUN
ajst-30166	41	16	as	as	ADP
ajst-30166	41	17	an	an	DET
ajst-30166	41	18	object	object	NOUN
ajst-30166	41	19	,	,	PUNCT
ajst-30166	41	20	nc50	nc50	PROPN
ajst-30166	41	21	thread	thread	NOUN
ajst-30166	41	22	specification	specification	NOUN
ajst-30166	41	23	is	be	AUX
ajst-30166	41	24	used	use	VERB
ajst-30166	41	25	as	as	ADP
ajst-30166	41	26	the	the	DET
ajst-30166	41	27	connection	connection	NOUN
ajst-30166	41	28	thread	thread	NOUN
ajst-30166	41	29	of	of	ADP
ajst-30166	41	30	the	the	DET
ajst-30166	41	31	tool	tool	NOUN
ajst-30166	41	32	,	,	PUNCT
ajst-30166	41	33	and	and	CCONJ
ajst-30166	41	34	the	the	DET
ajst-30166	41	35	tooth	tooth	NOUN
ajst-30166	41	36	type	type	NOUN
ajst-30166	41	37	is	be	AUX
ajst-30166	41	38	selected	select	VERB
ajst-30166	41	39	as	as	ADP
ajst-30166	41	40	v-0.038r	v-0.038r	NOUN
ajst-30166	41	41	.	.	PUNCT
ajst-30166	42	1	3d	3d	NOUN
ajst-30166	42	2	drawing	drawing	NOUN
ajst-30166	42	3	tools	tool	NOUN
ajst-30166	42	4	are	be	AUX
ajst-30166	42	5	used	use	VERB
ajst-30166	42	6	to	to	PART
ajst-30166	42	7	construct	construct	VERB
ajst-30166	42	8	a	a	DET
ajst-30166	42	9	3d	3d	NUM
ajst-30166	42	10	model	model	NOUN
ajst-30166	42	11	of	of	ADP
ajst-30166	42	12	the	the	DET
ajst-30166	42	13	conventional	conventional	ADJ
ajst-30166	42	14	buckle	buckle	NOUN
ajst-30166	42	15	,	,	PUNCT
ajst-30166	42	16	which	which	PRON
ajst-30166	42	17	is	be	AUX
ajst-30166	42	18	then	then	ADV
ajst-30166	42	19	imported	import	VERB
ajst-30166	42	20	into	into	ADP
ajst-30166	42	21	the	the	DET
ajst-30166	42	22	finite	finite	PROPN
ajst-30166	42	23	element	element	PROPN
ajst-30166	42	24	simulation	simulation	NOUN
ajst-30166	42	25	software	software	NOUN
ajst-30166	42	26	for	for	ADP
ajst-30166	42	27	mesh	mesh	NOUN
ajst-30166	42	28	delineation	delineation	NOUN
ajst-30166	42	29	.	.	PUNCT
ajst-30166	43	1	in	in	ADP
ajst-30166	43	2	order	order	NOUN
ajst-30166	43	3	to	to	PART
ajst-30166	43	4	ensure	ensure	VERB
ajst-30166	43	5	the	the	DET
ajst-30166	43	6	accuracy	accuracy	NOUN
ajst-30166	43	7	of	of	ADP
ajst-30166	43	8	calculation	calculation	NOUN
ajst-30166	43	9	,	,	PUNCT
ajst-30166	43	10	hexahedral	hexahedral	ADJ
ajst-30166	43	11	mesh	mesh	NOUN
ajst-30166	43	12	is	be	AUX
ajst-30166	43	13	selected	select	VERB
ajst-30166	43	14	as	as	ADP
ajst-30166	43	15	the	the	DET
ajst-30166	43	16	mesh	mesh	NOUN
ajst-30166	43	17	type	type	NOUN
ajst-30166	43	18	,	,	PUNCT
ajst-30166	43	19	and	and	CCONJ
ajst-30166	43	20	the	the	DET
ajst-30166	43	21	cell	cell	NOUN
ajst-30166	43	22	type	type	NOUN
ajst-30166	43	23	is	be	AUX
ajst-30166	43	24	set	set	VERB
ajst-30166	43	25	as	as	ADP
ajst-30166	43	26	c3d8r	c3d8r	X
ajst-30166	43	27	.	.	PUNCT
ajst-30166	44	1	in	in	ADP
ajst-30166	44	2	the	the	DET
ajst-30166	44	3	thread	thread	NOUN
ajst-30166	44	4	contact	contact	NOUN
ajst-30166	44	5	area	area	NOUN
ajst-30166	44	6	and	and	CCONJ
ajst-30166	44	7	its	its	PRON
ajst-30166	44	8	periphery	periphery	NOUN
ajst-30166	44	9	,	,	PUNCT
ajst-30166	44	10	high	high	ADJ
ajst-30166	44	11	-	-	PUNCT
ajst-30166	44	12	density	density	NOUN
ajst-30166	44	13	fine	fine	ADJ
ajst-30166	44	14	mesh	mesh	NOUN
ajst-30166	44	15	division	division	NOUN
ajst-30166	44	16	is	be	AUX
ajst-30166	44	17	implemented	implement	VERB
ajst-30166	44	18	;	;	PUNCT
ajst-30166	44	19	while	while	SCONJ
ajst-30166	44	20	in	in	ADP
ajst-30166	44	21	the	the	DET
ajst-30166	44	22	part	part	NOUN
ajst-30166	44	23	far	far	ADV
ajst-30166	44	24	away	away	ADV
ajst-30166	44	25	from	from	ADP
ajst-30166	44	26	the	the	DET
ajst-30166	44	27	thread	thread	NOUN
ajst-30166	44	28	contact	contact	NOUN
ajst-30166	44	29	,	,	PUNCT
ajst-30166	44	30	sparse	sparse	ADJ
ajst-30166	44	31	mesh	mesh	NOUN
ajst-30166	44	32	division	division	NOUN
ajst-30166	44	33	is	be	AUX
ajst-30166	44	34	used	use	VERB
ajst-30166	44	35	to	to	PART
ajst-30166	44	36	improve	improve	VERB
ajst-30166	44	37	the	the	DET
ajst-30166	44	38	calculation	calculation	NOUN
ajst-30166	44	39	efficiency	efficiency	NOUN
ajst-30166	44	40	,	,	PUNCT
ajst-30166	44	41	in	in	ADP
ajst-30166	44	42	which	which	PRON
ajst-30166	44	43	the	the	DET
ajst-30166	44	44	number	number	NOUN
ajst-30166	44	45	of	of	ADP
ajst-30166	44	46	cells	cell	NOUN
ajst-30166	44	47	for	for	ADP
ajst-30166	44	48	external	external	ADJ
ajst-30166	44	49	thread	thread	NOUN
ajst-30166	44	50	division	division	NOUN
ajst-30166	44	51	is	be	AUX
ajst-30166	44	52	114894	114894	NUM
ajst-30166	44	53	,	,	PUNCT
ajst-30166	44	54	and	and	CCONJ
ajst-30166	44	55	the	the	DET
ajst-30166	44	56	number	number	NOUN
ajst-30166	44	57	of	of	ADP
ajst-30166	44	58	nodes	node	NOUN
ajst-30166	44	59	is	be	AUX
ajst-30166	44	60	149180	149180	NUM
ajst-30166	44	61	,	,	PUNCT
ajst-30166	44	62	and	and	CCONJ
ajst-30166	44	63	that	that	PRON
ajst-30166	44	64	of	of	ADP
ajst-30166	44	65	the	the	DET
ajst-30166	44	66	internal	internal	ADJ
ajst-30166	44	67	thread	thread	NOUN
ajst-30166	44	68	is	be	AUX
ajst-30166	44	69	123,496	123,496	NUM
ajst-30166	44	70	,	,	PUNCT
ajst-30166	44	71	160	160	NUM
ajst-30166	44	72	nodes	node	NOUN
ajst-30166	44	73	and	and	CCONJ
ajst-30166	44	74	123496	123496	NUM
ajst-30166	44	75	.	.	PUNCT
ajst-30166	45	1	123496	123496	NUM
ajst-30166	45	2	,	,	PUNCT
ajst-30166	45	3	the	the	DET
ajst-30166	45	4	number	number	NOUN
ajst-30166	45	5	of	of	ADP
ajst-30166	45	6	nodes	node	NOUN
ajst-30166	45	7	is	be	AUX
ajst-30166	45	8	160933	160933	NUM
ajst-30166	45	9	,	,	PUNCT
ajst-30166	45	10	as	as	SCONJ
ajst-30166	45	11	shown	show	VERB
ajst-30166	45	12	in	in	ADP
ajst-30166	45	13	fig.3	fig.3	PROPN
ajst-30166	45	14	.	.	PUNCT
ajst-30166	46	1	(	(	PUNCT
ajst-30166	46	2	a	a	X
ajst-30166	46	3	)	)	PUNCT
ajst-30166	46	4	external	external	ADJ
ajst-30166	46	5	thread	thread	NOUN
ajst-30166	46	6	(	(	PUNCT
ajst-30166	46	7	b	b	NOUN
ajst-30166	46	8	)	)	PUNCT
ajst-30166	46	9	female	female	ADJ
ajst-30166	46	10	thread	thread	NOUN
ajst-30166	46	11	figure	figure	NOUN
ajst-30166	46	12	3	3	NUM
ajst-30166	46	13	.	.	PUNCT
ajst-30166	46	14	api	api	NOUN
ajst-30166	46	15	thread	thread	NOUN
ajst-30166	46	16	3d	3d	NUM
ajst-30166	46	17	mesh	mesh	NOUN
ajst-30166	46	18	model	model	NOUN
ajst-30166	46	19	(	(	PUNCT
ajst-30166	46	20	2	2	NUM
ajst-30166	46	21	)	)	PUNCT
ajst-30166	46	22	double	double	ADJ
ajst-30166	46	23	shoulder	shoulder	NOUN
ajst-30166	46	24	joint	joint	ADJ
ajst-30166	46	25	threads	thread	NOUN
ajst-30166	46	26	the	the	DET
ajst-30166	46	27	double	double	ADJ
ajst-30166	46	28	shoulder	shoulder	NOUN
ajst-30166	46	29	structure	structure	NOUN
ajst-30166	46	30	adds	add	VERB
ajst-30166	46	31	a	a	DET
ajst-30166	46	32	sub	sub	NOUN
ajst-30166	46	33	-	-	NOUN
ajst-30166	46	34	shoulder	shoulder	NOUN
ajst-30166	46	35	on	on	ADP
ajst-30166	46	36	the	the	DET
ajst-30166	46	37	basis	basis	NOUN
ajst-30166	46	38	of	of	ADP
ajst-30166	46	39	the	the	DET
ajst-30166	46	40	conventional	conventional	ADJ
ajst-30166	46	41	api	api	NOUN
ajst-30166	46	42	thread	thread	NOUN
ajst-30166	46	43	,	,	PUNCT
ajst-30166	46	44	which	which	PRON
ajst-30166	46	45	increases	increase	VERB
ajst-30166	46	46	the	the	DET
ajst-30166	46	47	contact	contact	NOUN
ajst-30166	46	48	area	area	NOUN
ajst-30166	46	49	of	of	ADP
ajst-30166	46	50	the	the	DET
ajst-30166	46	51	shoulder	shoulder	NOUN
ajst-30166	46	52	surface	surface	NOUN
ajst-30166	46	53	and	and	CCONJ
ajst-30166	46	54	the	the	DET
ajst-30166	46	55	friction	friction	NOUN
ajst-30166	46	56	torque	torque	NOUN
ajst-30166	46	57	of	of	ADP
ajst-30166	46	58	11	11	NUM
ajst-30166	46	59	the	the	DET
ajst-30166	46	60	shoulder	shoulder	NOUN
ajst-30166	46	61	surface	surface	NOUN
ajst-30166	46	62	,	,	PUNCT
ajst-30166	46	63	thus	thus	ADV
ajst-30166	46	64	reducing	reduce	VERB
ajst-30166	46	65	the	the	DET
ajst-30166	46	66	load	load	NOUN
ajst-30166	46	67	on	on	ADP
ajst-30166	46	68	the	the	DET
ajst-30166	46	69	threaded	threaded	ADJ
ajst-30166	46	70	part	part	NOUN
ajst-30166	46	71	and	and	CCONJ
ajst-30166	46	72	making	make	VERB
ajst-30166	46	73	the	the	DET
ajst-30166	46	74	load	load	NOUN
ajst-30166	46	75	distribution	distribution	NOUN
ajst-30166	46	76	uniform	uniform	NOUN
ajst-30166	46	77	at	at	ADP
ajst-30166	46	78	the	the	DET
ajst-30166	46	79	beginning	beginning	NOUN
ajst-30166	46	80	and	and	CCONJ
ajst-30166	46	81	end	end	NOUN
ajst-30166	46	82	of	of	ADP
ajst-30166	46	83	the	the	DET
ajst-30166	46	84	thread	thread	NOUN
ajst-30166	46	85	.	.	PUNCT
ajst-30166	47	1	the	the	DET
ajst-30166	47	2	three	three	NUM
ajst-30166	47	3	-	-	PUNCT
ajst-30166	47	4	dimensional	dimensional	ADJ
ajst-30166	47	5	model	model	NOUN
ajst-30166	47	6	is	be	AUX
ajst-30166	47	7	shown	show	VERB
ajst-30166	47	8	in	in	ADP
ajst-30166	47	9	figure	figure	NOUN
ajst-30166	47	10	34	34	NUM
ajst-30166	47	11	.	.	PUNCT
ajst-30166	48	1	the	the	DET
ajst-30166	48	2	mesh	mesh	NOUN
ajst-30166	48	3	division	division	NOUN
ajst-30166	48	4	is	be	AUX
ajst-30166	48	5	consistent	consistent	ADJ
ajst-30166	48	6	with	with	ADP
ajst-30166	48	7	the	the	DET
ajst-30166	48	8	above	above	NOUN
ajst-30166	48	9	,	,	PUNCT
ajst-30166	48	10	in	in	ADP
ajst-30166	48	11	which	which	PRON
ajst-30166	48	12	the	the	DET
ajst-30166	48	13	number	number	NOUN
ajst-30166	48	14	of	of	ADP
ajst-30166	48	15	cells	cell	NOUN
ajst-30166	48	16	for	for	ADP
ajst-30166	48	17	external	external	ADJ
ajst-30166	48	18	thread	thread	NOUN
ajst-30166	48	19	division	division	NOUN
ajst-30166	48	20	is	be	AUX
ajst-30166	48	21	116154	116154	NUM
ajst-30166	48	22	and	and	CCONJ
ajst-30166	48	23	the	the	DET
ajst-30166	48	24	number	number	NOUN
ajst-30166	48	25	of	of	ADP
ajst-30166	48	26	nodes	node	NOUN
ajst-30166	48	27	is	be	AUX
ajst-30166	48	28	150650	150650	NUM
ajst-30166	48	29	,	,	PUNCT
ajst-30166	48	30	while	while	SCONJ
ajst-30166	48	31	the	the	DET
ajst-30166	48	32	number	number	NOUN
ajst-30166	48	33	of	of	ADP
ajst-30166	48	34	cells	cell	NOUN
ajst-30166	48	35	for	for	ADP
ajst-30166	48	36	internal	internal	ADJ
ajst-30166	48	37	thread	thread	NOUN
ajst-30166	48	38	is	be	AUX
ajst-30166	48	39	121156	121156	NUM
ajst-30166	48	40	and	and	CCONJ
ajst-30166	48	41	the	the	DET
ajst-30166	48	42	number	number	NOUN
ajst-30166	48	43	of	of	ADP
ajst-30166	48	44	nodes	node	NOUN
ajst-30166	48	45	is	be	AUX
ajst-30166	48	46	158515	158515	NUM
ajst-30166	48	47	,	,	PUNCT
ajst-30166	48	48	as	as	SCONJ
ajst-30166	48	49	shown	show	VERB
ajst-30166	48	50	in	in	ADP
ajst-30166	48	51	fig.4	fig.4	PROPN
ajst-30166	48	52	.	.	PROPN
ajst-30166	48	53	figure	figure	NOUN
ajst-30166	48	54	4	4	NUM
ajst-30166	48	55	.	.	PUNCT
ajst-30166	48	56	three	three	NUM
ajst-30166	48	57	-	-	PUNCT
ajst-30166	48	58	dimensional	dimensional	ADJ
ajst-30166	48	59	mesh	mesh	NOUN
ajst-30166	48	60	model	model	NOUN
ajst-30166	48	61	of	of	ADP
ajst-30166	48	62	a	a	DET
ajst-30166	48	63	double	double	ADJ
ajst-30166	48	64	-	-	PUNCT
ajst-30166	48	65	shouldered	shouldered	ADJ
ajst-30166	48	66	structure	structure	NOUN
ajst-30166	48	67	2.3	2.3	NUM
ajst-30166	48	68	.	.	PUNCT
ajst-30166	49	1	simulation	simulation	NOUN
ajst-30166	49	2	model	model	NOUN
ajst-30166	49	3	accuracy	accuracy	NOUN
ajst-30166	49	4	verification	verification	NOUN
ajst-30166	49	5	in	in	ADP
ajst-30166	49	6	order	order	NOUN
ajst-30166	49	7	to	to	PART
ajst-30166	49	8	verify	verify	VERB
ajst-30166	49	9	the	the	DET
ajst-30166	49	10	accuracy	accuracy	NOUN
ajst-30166	49	11	of	of	ADP
ajst-30166	49	12	the	the	DET
ajst-30166	49	13	finite	finite	PROPN
ajst-30166	49	14	element	element	NOUN
ajst-30166	49	15	calculation	calculation	NOUN
ajst-30166	49	16	results	result	NOUN
ajst-30166	49	17	,	,	PUNCT
ajst-30166	49	18	this	this	DET
ajst-30166	49	19	paper	paper	NOUN
ajst-30166	49	20	refers	refer	VERB
ajst-30166	49	21	to	to	ADP
ajst-30166	49	22	the	the	DET
ajst-30166	49	23	literature[12	literature[12	NOUN
ajst-30166	49	24	]	]	X
ajst-30166	49	25	experimental	experimental	ADJ
ajst-30166	49	26	testing	testing	NOUN
ajst-30166	49	27	of	of	ADP
ajst-30166	49	28	ø139.7	ø139.7	NOUN
ajst-30166	49	29	mm	mm	NOUN
ajst-30166	49	30	×	×	NOUN
ajst-30166	49	31	7.72	7.72	NUM
ajst-30166	49	32	mm	mm	NUM
ajst-30166	49	33	long	long	ADJ
ajst-30166	49	34	round	round	NOUN
ajst-30166	49	35	threaded	threaded	ADJ
ajst-30166	49	36	casing	casing	NOUN
ajst-30166	49	37	fitting	fitting	ADJ
ajst-30166	49	38	,	,	PUNCT
ajst-30166	49	39	experiments	experiment	NOUN
ajst-30166	49	40	were	be	AUX
ajst-30166	49	41	used	use	VERB
ajst-30166	49	42	in	in	ADP
ajst-30166	49	43	this	this	DET
ajst-30166	49	44	casing	casing	NOUN
ajst-30166	49	45	fitting	fit	VERB
ajst-30166	49	46	with	with	ADP
ajst-30166	49	47	different	different	ADJ
ajst-30166	49	48	compression	compression	NOUN
ajst-30166	49	49	loads	load	NOUN
ajst-30166	49	50	,	,	PUNCT
ajst-30166	49	51	in	in	ADP
ajst-30166	49	52	different	different	ADJ
ajst-30166	49	53	number	number	NOUN
ajst-30166	49	54	of	of	ADP
ajst-30166	49	55	upper	upper	ADJ
ajst-30166	49	56	buckles	buckle	NOUN
ajst-30166	49	57	and	and	CCONJ
ajst-30166	49	58	under	under	ADP
ajst-30166	49	59	different	different	ADJ
ajst-30166	49	60	tensile	tensile	NOUN
ajst-30166	49	61	loads	load	NOUN
ajst-30166	49	62	to	to	PART
ajst-30166	49	63	carry	carry	VERB
ajst-30166	49	64	out	out	ADP
ajst-30166	49	65	research	research	NOUN
ajst-30166	49	66	experiments	experiment	NOUN
ajst-30166	49	67	,	,	PUNCT
ajst-30166	49	68	for	for	ADP
ajst-30166	49	69	the	the	DET
ajst-30166	49	70	theoretical	theoretical	ADJ
ajst-30166	49	71	analysis	analysis	NOUN
ajst-30166	49	72	of	of	ADP
ajst-30166	49	73	casing	case	VERB
ajst-30166	49	74	fittings	fitting	NOUN
ajst-30166	49	75	threads	thread	NOUN
ajst-30166	49	76	and	and	CCONJ
ajst-30166	49	77	numerical	numerical	ADJ
ajst-30166	49	78	analysis	analysis	NOUN
ajst-30166	49	79	to	to	PART
ajst-30166	49	80	provide	provide	VERB
ajst-30166	49	81	experimental	experimental	ADJ
ajst-30166	49	82	results	result	NOUN
ajst-30166	49	83	of	of	ADP
ajst-30166	49	84	the	the	DET
ajst-30166	49	85	support	support	NOUN
ajst-30166	49	86	of	of	ADP
ajst-30166	49	87	the	the	DET
ajst-30166	49	88	data	datum	NOUN
ajst-30166	49	89	.	.	PUNCT
ajst-30166	50	1	under	under	ADP
ajst-30166	50	2	the	the	DET
ajst-30166	50	3	experimental	experimental	ADJ
ajst-30166	50	4	conditions	condition	NOUN
ajst-30166	50	5	of	of	ADP
ajst-30166	50	6	axial	axial	ADJ
ajst-30166	50	7	tension	tension	NOUN
ajst-30166	50	8	of	of	ADP
ajst-30166	50	9	1200.96kn	1200.96kn	NUM
ajst-30166	50	10	,	,	PUNCT
ajst-30166	50	11	the	the	DET
ajst-30166	50	12	data	datum	NOUN
ajst-30166	50	13	of	of	ADP
ajst-30166	50	14	stress	stress	NOUN
ajst-30166	50	15	change	change	NOUN
ajst-30166	50	16	on	on	ADP
ajst-30166	50	17	the	the	DET
ajst-30166	50	18	outer	outer	ADJ
ajst-30166	50	19	surface	surface	NOUN
ajst-30166	50	20	of	of	ADP
ajst-30166	50	21	the	the	DET
ajst-30166	50	22	casing	casing	NOUN
ajst-30166	50	23	were	be	AUX
ajst-30166	50	24	collected	collect	VERB
ajst-30166	50	25	,	,	PUNCT
ajst-30166	50	26	and	and	CCONJ
ajst-30166	50	27	the	the	DET
ajst-30166	50	28	stresses	stress	NOUN
ajst-30166	50	29	of	of	ADP
ajst-30166	50	30	10	10	NUM
ajst-30166	50	31	data	datum	NOUN
ajst-30166	50	32	points	point	NOUN
ajst-30166	50	33	on	on	ADP
ajst-30166	50	34	the	the	DET
ajst-30166	50	35	outer	outer	ADJ
ajst-30166	50	36	surface	surface	NOUN
ajst-30166	50	37	of	of	ADP
ajst-30166	50	38	the	the	DET
ajst-30166	50	39	casing	casing	NOUN
ajst-30166	50	40	were	be	AUX
ajst-30166	50	41	taken	take	VERB
ajst-30166	50	42	in	in	ADP
ajst-30166	50	43	the	the	DET
ajst-30166	50	44	simulation	simulation	NOUN
ajst-30166	50	45	results	result	NOUN
ajst-30166	50	46	and	and	CCONJ
ajst-30166	50	47	compared	compare	VERB
ajst-30166	50	48	with	with	ADP
ajst-30166	50	49	the	the	DET
ajst-30166	50	50	collected	collect	VERB
ajst-30166	50	51	data	datum	NOUN
ajst-30166	50	52	of	of	ADP
ajst-30166	50	53	the	the	DET
ajst-30166	50	54	corresponding	corresponding	ADJ
ajst-30166	50	55	points	point	NOUN
ajst-30166	50	56	on	on	ADP
ajst-30166	50	57	the	the	DET
ajst-30166	50	58	outer	outer	ADJ
ajst-30166	50	59	surface	surface	NOUN
ajst-30166	50	60	of	of	ADP
ajst-30166	50	61	the	the	DET
ajst-30166	50	62	experimental	experimental	ADJ
ajst-30166	50	63	casing	casing	NOUN
ajst-30166	50	64	,	,	PUNCT
ajst-30166	50	65	as	as	SCONJ
ajst-30166	50	66	shown	show	VERB
ajst-30166	50	67	in	in	ADP
ajst-30166	50	68	fig.5	fig.5	PROPN
ajst-30166	50	69	.	.	PUNCT
ajst-30166	51	1	as	as	SCONJ
ajst-30166	51	2	can	can	AUX
ajst-30166	51	3	be	be	AUX
ajst-30166	51	4	seen	see	VERB
ajst-30166	51	5	from	from	ADP
ajst-30166	51	6	fig.5	fig.5	PROPN
ajst-30166	51	7	,	,	PUNCT
ajst-30166	51	8	the	the	DET
ajst-30166	51	9	calculation	calculation	NOUN
ajst-30166	51	10	results	result	NOUN
ajst-30166	51	11	obtained	obtain	VERB
ajst-30166	51	12	by	by	ADP
ajst-30166	51	13	the	the	DET
ajst-30166	51	14	two	two	NUM
ajst-30166	51	15	methods	method	NOUN
ajst-30166	51	16	show	show	VERB
ajst-30166	51	17	a	a	DET
ajst-30166	51	18	basic	basic	ADJ
ajst-30166	51	19	consistent	consistent	ADJ
ajst-30166	51	20	trend	trend	NOUN
ajst-30166	51	21	,	,	PUNCT
ajst-30166	51	22	with	with	ADP
ajst-30166	51	23	a	a	DET
ajst-30166	51	24	maximum	maximum	ADJ
ajst-30166	51	25	error	error	NOUN
ajst-30166	51	26	of	of	ADP
ajst-30166	51	27	8.72	8.72	NUM
ajst-30166	51	28	%	%	NOUN
ajst-30166	51	29	.	.	PUNCT
ajst-30166	52	1	it	it	PRON
ajst-30166	52	2	proves	prove	VERB
ajst-30166	52	3	the	the	DET
ajst-30166	52	4	accuracy	accuracy	NOUN
ajst-30166	52	5	of	of	ADP
ajst-30166	52	6	the	the	DET
ajst-30166	52	7	finite	finite	PROPN
ajst-30166	52	8	element	element	PROPN
ajst-30166	52	9	simulation	simulation	NOUN
ajst-30166	52	10	model	model	NOUN
ajst-30166	52	11	of	of	ADP
ajst-30166	52	12	the	the	DET
ajst-30166	52	13	drilling	drilling	NOUN
ajst-30166	52	14	tool	tool	NOUN
ajst-30166	52	15	threads	thread	NOUN
ajst-30166	52	16	constructed	construct	VERB
ajst-30166	52	17	.	.	PUNCT
ajst-30166	53	1	the	the	DET
ajst-30166	53	2	model	model	NOUN
ajst-30166	53	3	can	can	AUX
ajst-30166	53	4	be	be	AUX
ajst-30166	53	5	used	use	VERB
ajst-30166	53	6	to	to	PART
ajst-30166	53	7	gain	gain	VERB
ajst-30166	53	8	a	a	DET
ajst-30166	53	9	deeper	deep	ADJ
ajst-30166	53	10	understanding	understanding	NOUN
ajst-30166	53	11	of	of	ADP
ajst-30166	53	12	the	the	DET
ajst-30166	53	13	stress	stress	NOUN
ajst-30166	53	14	distribution	distribution	NOUN
ajst-30166	53	15	of	of	ADP
ajst-30166	53	16	the	the	DET
ajst-30166	53	17	threaded	thread	VERB
ajst-30166	53	18	casing	casing	NOUN
ajst-30166	53	19	joint	joint	NOUN
ajst-30166	53	20	of	of	ADP
ajst-30166	53	21	the	the	DET
ajst-30166	53	22	drill	drill	NOUN
ajst-30166	53	23	pipe	pipe	NOUN
ajst-30166	53	24	and	and	CCONJ
ajst-30166	53	25	provide	provide	VERB
ajst-30166	53	26	an	an	DET
ajst-30166	53	27	important	important	ADJ
ajst-30166	53	28	theoretical	theoretical	ADJ
ajst-30166	53	29	basis	basis	NOUN
ajst-30166	53	30	for	for	ADP
ajst-30166	53	31	optimizing	optimize	VERB
ajst-30166	53	32	the	the	DET
ajst-30166	53	33	design	design	NOUN
ajst-30166	53	34	of	of	ADP
ajst-30166	53	35	the	the	DET
ajst-30166	53	36	main	main	ADJ
ajst-30166	53	37	parameters	parameter	NOUN
ajst-30166	53	38	of	of	ADP
ajst-30166	53	39	its	its	PRON
ajst-30166	53	40	threads	thread	NOUN
ajst-30166	53	41	.	.	PUNCT
ajst-30166	54	1	figure	figure	NOUN
ajst-30166	54	2	5	5	NUM
ajst-30166	54	3	.	.	PUNCT
ajst-30166	54	4	comparison	comparison	NOUN
ajst-30166	54	5	of	of	ADP
ajst-30166	54	6	experimental	experimental	ADJ
ajst-30166	54	7	and	and	CCONJ
ajst-30166	54	8	simulation	simulation	NOUN
ajst-30166	54	9	results	result	VERB
ajst-30166	54	10	3	3	NUM
ajst-30166	54	11	.	.	PUNCT
ajst-30166	55	1	analysis	analysis	NOUN
ajst-30166	55	2	of	of	ADP
ajst-30166	55	3	thread	thread	NOUN
ajst-30166	55	4	torque	torque	NOUN
ajst-30166	55	5	carrying	carry	VERB
ajst-30166	55	6	performance	performance	NOUN
ajst-30166	55	7	of	of	ADP
ajst-30166	55	8	double	double	ADJ
ajst-30166	55	9	shoulder	shoulder	NOUN
ajst-30166	55	10	joints	joint	NOUN
ajst-30166	55	11	the	the	DET
ajst-30166	55	12	stress	stress	NOUN
ajst-30166	55	13	characteristics	characteristic	NOUN
ajst-30166	55	14	of	of	ADP
ajst-30166	55	15	the	the	DET
ajst-30166	55	16	two	two	NUM
ajst-30166	55	17	couplings	coupling	NOUN
ajst-30166	55	18	under	under	ADP
ajst-30166	55	19	torsional	torsional	ADJ
ajst-30166	55	20	loading	loading	NOUN
ajst-30166	55	21	are	be	AUX
ajst-30166	55	22	simulated	simulate	VERB
ajst-30166	55	23	and	and	CCONJ
ajst-30166	55	24	analyzed	analyze	VERB
ajst-30166	55	25	based	base	VERB
ajst-30166	55	26	on	on	ADP
ajst-30166	55	27	the	the	DET
ajst-30166	55	28	three	three	NUM
ajst-30166	55	29	-	-	PUNCT
ajst-30166	55	30	dimensional	dimensional	ADJ
ajst-30166	55	31	finite	finite	ADJ
ajst-30166	55	32	element	element	NOUN
ajst-30166	55	33	method	method	NOUN
ajst-30166	55	34	to	to	PART
ajst-30166	55	35	obtain	obtain	VERB
ajst-30166	55	36	the	the	DET
ajst-30166	55	37	stress	stress	NOUN
ajst-30166	55	38	distribution	distribution	NOUN
ajst-30166	55	39	pattern	pattern	NOUN
ajst-30166	55	40	and	and	CCONJ
ajst-30166	55	41	then	then	ADV
ajst-30166	55	42	evaluate	evaluate	VERB
ajst-30166	55	43	their	their	PRON
ajst-30166	55	44	torsional	torsional	ADJ
ajst-30166	55	45	strength	strength	NOUN
ajst-30166	55	46	.	.	PUNCT
ajst-30166	56	1	the	the	DET
ajst-30166	56	2	boundary	boundary	ADJ
ajst-30166	56	3	conditions	condition	NOUN
ajst-30166	56	4	are	be	AUX
ajst-30166	56	5	fixed	fix	VERB
ajst-30166	56	6	at	at	ADP
ajst-30166	56	7	one	one	NUM
ajst-30166	56	8	end	end	NOUN
ajst-30166	56	9	of	of	ADP
ajst-30166	56	10	the	the	DET
ajst-30166	56	11	joint	joint	ADJ
ajst-30166	56	12	threads	thread	NOUN
ajst-30166	56	13	,	,	PUNCT
ajst-30166	56	14	and	and	CCONJ
ajst-30166	56	15	the	the	DET
ajst-30166	56	16	other	other	ADJ
ajst-30166	56	17	end	end	NOUN
ajst-30166	56	18	is	be	AUX
ajst-30166	56	19	applied	apply	VERB
ajst-30166	56	20	with	with	ADP
ajst-30166	56	21	torsional	torsional	ADJ
ajst-30166	56	22	load	load	NOUN
ajst-30166	56	23	at	at	ADP
ajst-30166	56	24	the	the	DET
ajst-30166	56	25	coupling	coupling	NOUN
ajst-30166	56	26	point	point	NOUN
ajst-30166	56	27	,	,	PUNCT
ajst-30166	56	28	which	which	PRON
ajst-30166	56	29	is	be	AUX
ajst-30166	56	30	loaded	load	VERB
ajst-30166	56	31	slowly	slowly	ADV
ajst-30166	56	32	by	by	ADP
ajst-30166	56	33	using	use	VERB
ajst-30166	56	34	a	a	DET
ajst-30166	56	35	smooth	smooth	ADJ
ajst-30166	56	36	loading	loading	NOUN
ajst-30166	56	37	method	method	NOUN
ajst-30166	56	38	.	.	PUNCT
ajst-30166	57	1	the	the	DET
ajst-30166	57	2	torsional	torsional	ADJ
ajst-30166	57	3	performance	performance	NOUN
ajst-30166	57	4	of	of	ADP
ajst-30166	57	5	the	the	DET
ajst-30166	57	6	two	two	NUM
ajst-30166	57	7	structures	structure	NOUN
ajst-30166	57	8	is	be	AUX
ajst-30166	57	9	compared	compare	VERB
ajst-30166	57	10	by	by	ADP
ajst-30166	57	11	calculating	calculate	VERB
ajst-30166	57	12	the	the	DET
ajst-30166	57	13	stresses	stress	NOUN
ajst-30166	57	14	under	under	ADP
ajst-30166	57	15	torsional	torsional	ADJ
ajst-30166	57	16	loading	loading	NOUN
ajst-30166	57	17	.	.	PUNCT
ajst-30166	58	1	the	the	DET
ajst-30166	58	2	results	result	NOUN
ajst-30166	58	3	of	of	ADP
ajst-30166	58	4	the	the	DET
ajst-30166	58	5	api	api	NOUN
ajst-30166	58	6	thread	thread	NOUN
ajst-30166	58	7	calculations	calculation	NOUN
ajst-30166	58	8	are	be	AUX
ajst-30166	58	9	as	as	SCONJ
ajst-30166	58	10	follows	follow	VERB
ajst-30166	58	11	:	:	PUNCT
ajst-30166	58	12	12	12	NUM
ajst-30166	58	13	figure	figure	NOUN
ajst-30166	58	14	6	6	NUM
ajst-30166	58	15	.	.	PUNCT
ajst-30166	59	1	torque	torque	NOUN
ajst-30166	59	2	load	load	NOUN
ajst-30166	59	3	api	api	NOUN
ajst-30166	59	4	threaded	thread	VERB
ajst-30166	59	5	joints	joint	NOUN
ajst-30166	59	6	thread	thread	VERB
ajst-30166	59	7	stress	stress	NOUN
ajst-30166	59	8	clouds	cloud	NOUN
ajst-30166	59	9	fig.6	fig.6	PROPN
ajst-30166	59	10	shows	show	VERB
ajst-30166	59	11	the	the	DET
ajst-30166	59	12	stress	stress	NOUN
ajst-30166	59	13	cloud	cloud	PROPN
ajst-30166	59	14	diagram	diagram	NOUN
ajst-30166	59	15	of	of	ADP
ajst-30166	59	16	api	api	NOUN
ajst-30166	59	17	threads	thread	NOUN
ajst-30166	59	18	under	under	ADP
ajst-30166	59	19	torsional	torsional	ADJ
ajst-30166	59	20	loads	load	NOUN
ajst-30166	59	21	of	of	ADP
ajst-30166	59	22	40kn·m	40kn·m	NUM
ajst-30166	59	23	,	,	PUNCT
ajst-30166	59	24	50kn·m	50kn·m	NUM
ajst-30166	59	25	and	and	CCONJ
ajst-30166	59	26	60kn·m	60kn·m	NUM
ajst-30166	59	27	.	.	PUNCT
ajst-30166	60	1	as	as	SCONJ
ajst-30166	60	2	the	the	DET
ajst-30166	60	3	torque	torque	NOUN
ajst-30166	60	4	decreases	decrease	VERB
ajst-30166	60	5	,	,	PUNCT
ajst-30166	60	6	the	the	DET
ajst-30166	60	7	thread	thread	NOUN
ajst-30166	60	8	stress	stress	NOUN
ajst-30166	60	9	decreases	decrease	VERB
ajst-30166	60	10	,	,	PUNCT
ajst-30166	60	11	and	and	CCONJ
ajst-30166	60	12	the	the	DET
ajst-30166	60	13	stress	stress	NOUN
ajst-30166	60	14	exceeds	exceed	VERB
ajst-30166	60	15	the	the	DET
ajst-30166	60	16	yield	yield	NOUN
ajst-30166	60	17	limit	limit	NOUN
ajst-30166	60	18	(	(	PUNCT
ajst-30166	60	19	930mpa	930mpa	NUM
ajst-30166	60	20	)	)	PUNCT
ajst-30166	60	21	under	under	ADP
ajst-30166	60	22	the	the	DET
ajst-30166	60	23	60kn·m	60kn·m	NUM
ajst-30166	60	24	torque	torque	NOUN
ajst-30166	60	25	.	.	PUNCT
ajst-30166	61	1	it	it	PRON
ajst-30166	61	2	can	can	AUX
ajst-30166	61	3	be	be	AUX
ajst-30166	61	4	seen	see	VERB
ajst-30166	61	5	from	from	ADP
ajst-30166	61	6	the	the	DET
ajst-30166	61	7	cloud	cloud	ADJ
ajst-30166	61	8	diagram	diagram	NOUN
ajst-30166	61	9	that	that	PRON
ajst-30166	61	10	the	the	DET
ajst-30166	61	11	maximum	maximum	ADJ
ajst-30166	61	12	stress	stress	NOUN
ajst-30166	61	13	of	of	ADP
ajst-30166	61	14	api	api	NOUN
ajst-30166	61	15	joint	joint	ADJ
ajst-30166	61	16	threads	thread	NOUN
ajst-30166	61	17	under	under	ADP
ajst-30166	61	18	torsional	torsional	ADJ
ajst-30166	61	19	load	load	NOUN
ajst-30166	61	20	is	be	AUX
ajst-30166	61	21	concentrated	concentrate	VERB
ajst-30166	61	22	in	in	ADP
ajst-30166	61	23	the	the	DET
ajst-30166	61	24	first	first	ADJ
ajst-30166	61	25	turn	turn	NOUN
ajst-30166	61	26	of	of	ADP
ajst-30166	61	27	threads	thread	NOUN
ajst-30166	61	28	on	on	ADP
ajst-30166	61	29	the	the	DET
ajst-30166	61	30	shoulder	shoulder	NOUN
ajst-30166	61	31	side	side	NOUN
ajst-30166	61	32	of	of	ADP
ajst-30166	61	33	the	the	DET
ajst-30166	61	34	main	main	ADJ
ajst-30166	61	35	platform	platform	NOUN
ajst-30166	61	36	,	,	PUNCT
ajst-30166	61	37	and	and	CCONJ
ajst-30166	61	38	the	the	DET
ajst-30166	61	39	friction	friction	NOUN
ajst-30166	61	40	moment	moment	NOUN
ajst-30166	61	41	generated	generate	VERB
ajst-30166	61	42	on	on	ADP
ajst-30166	61	43	the	the	DET
ajst-30166	61	44	shoulder	shoulder	NOUN
ajst-30166	61	45	side	side	NOUN
ajst-30166	61	46	of	of	ADP
ajst-30166	61	47	the	the	DET
ajst-30166	61	48	main	main	ADJ
ajst-30166	61	49	platform	platform	NOUN
ajst-30166	61	50	resists	resist	VERB
ajst-30166	61	51	part	part	NOUN
ajst-30166	61	52	of	of	ADP
ajst-30166	61	53	the	the	DET
ajst-30166	61	54	torque	torque	NOUN
ajst-30166	61	55	load	load	NOUN
ajst-30166	61	56	,	,	PUNCT
ajst-30166	61	57	and	and	CCONJ
ajst-30166	61	58	the	the	DET
ajst-30166	61	59	first	first	ADJ
ajst-30166	61	60	turn	turn	NOUN
ajst-30166	61	61	of	of	ADP
ajst-30166	61	62	the	the	DET
ajst-30166	61	63	threaded	thread	VERB
ajst-30166	61	64	teeth	tooth	NOUN
ajst-30166	61	65	is	be	AUX
ajst-30166	61	66	significantly	significantly	ADV
ajst-30166	61	67	larger	large	ADJ
ajst-30166	61	68	than	than	ADP
ajst-30166	61	69	the	the	DET
ajst-30166	61	70	rest	rest	NOUN
ajst-30166	61	71	of	of	ADP
ajst-30166	61	72	the	the	DET
ajst-30166	61	73	threaded	thread	VERB
ajst-30166	61	74	teeth	tooth	NOUN
ajst-30166	61	75	,	,	PUNCT
ajst-30166	61	76	and	and	CCONJ
ajst-30166	61	77	the	the	DET
ajst-30166	61	78	friction	friction	NOUN
ajst-30166	61	79	moment	moment	NOUN
ajst-30166	61	80	generated	generate	VERB
ajst-30166	61	81	on	on	ADP
ajst-30166	61	82	the	the	DET
ajst-30166	61	83	threaded	thread	VERB
ajst-30166	61	84	surfaces	surface	NOUN
ajst-30166	61	85	resists	resist	VERB
ajst-30166	61	86	the	the	DET
ajst-30166	61	87	rest	rest	NOUN
ajst-30166	61	88	of	of	ADP
ajst-30166	61	89	the	the	DET
ajst-30166	61	90	torque	torque	NOUN
ajst-30166	61	91	load	load	NOUN
ajst-30166	61	92	,	,	PUNCT
ajst-30166	61	93	so	so	SCONJ
ajst-30166	61	94	that	that	SCONJ
ajst-30166	61	95	the	the	DET
ajst-30166	61	96	distribution	distribution	NOUN
ajst-30166	61	97	of	of	ADP
ajst-30166	61	98	the	the	DET
ajst-30166	61	99	stress	stress	NOUN
ajst-30166	61	100	on	on	ADP
ajst-30166	61	101	threads	thread	NOUN
ajst-30166	61	102	shows	show	VERB
ajst-30166	61	103	that	that	SCONJ
ajst-30166	61	104	the	the	DET
ajst-30166	61	105	maximum	maximum	ADJ
ajst-30166	61	106	stress	stress	NOUN
ajst-30166	61	107	of	of	ADP
ajst-30166	61	108	the	the	DET
ajst-30166	61	109	first	first	ADJ
ajst-30166	61	110	turn	turn	NOUN
ajst-30166	61	111	of	of	ADP
ajst-30166	61	112	the	the	DET
ajst-30166	61	113	threads	thread	NOUN
ajst-30166	61	114	is	be	AUX
ajst-30166	61	115	decreasing	decrease	VERB
ajst-30166	61	116	in	in	ADP
ajst-30166	61	117	turn	turn	NOUN
ajst-30166	61	118	afterward	afterward	ADV
ajst-30166	61	119	.	.	PUNCT
ajst-30166	62	1	the	the	DET
ajst-30166	62	2	stress	stress	NOUN
ajst-30166	62	3	distribution	distribution	NOUN
ajst-30166	62	4	is	be	AUX
ajst-30166	62	5	extremely	extremely	ADV
ajst-30166	62	6	uneven	uneven	ADJ
ajst-30166	62	7	,	,	PUNCT
ajst-30166	62	8	which	which	PRON
ajst-30166	62	9	can	can	AUX
ajst-30166	62	10	easily	easily	ADV
ajst-30166	62	11	cause	cause	VERB
ajst-30166	62	12	the	the	DET
ajst-30166	62	13	stress	stress	NOUN
ajst-30166	62	14	concentration	concentration	NOUN
ajst-30166	62	15	in	in	ADP
ajst-30166	62	16	the	the	DET
ajst-30166	62	17	first	first	ADJ
ajst-30166	62	18	turn	turn	NOUN
ajst-30166	62	19	of	of	ADP
ajst-30166	62	20	the	the	DET
ajst-30166	62	21	thread	thread	NOUN
ajst-30166	62	22	,	,	PUNCT
ajst-30166	62	23	resulting	result	VERB
ajst-30166	62	24	in	in	ADP
ajst-30166	62	25	fatigue	fatigue	NOUN
ajst-30166	62	26	damage	damage	NOUN
ajst-30166	62	27	.	.	PUNCT
ajst-30166	63	1	figure	figure	NOUN
ajst-30166	63	2	7	7	NUM
ajst-30166	63	3	.	.	PUNCT
ajst-30166	63	4	torque	torque	NOUN
ajst-30166	63	5	load	load	NOUN
ajst-30166	63	6	-	-	PUNCT
ajst-30166	63	7	double	double	ADJ
ajst-30166	63	8	shoulder	shoulder	NOUN
ajst-30166	63	9	threaded	thread	VERB
ajst-30166	63	10	joints	joint	NOUN
ajst-30166	63	11	thread	thread	NOUN
ajst-30166	63	12	stress	stress	NOUN
ajst-30166	63	13	clouds	cloud	NOUN
ajst-30166	63	14	fig.7	fig.7	ADV
ajst-30166	63	15	shows	show	VERB
ajst-30166	63	16	the	the	DET
ajst-30166	63	17	stress	stress	NOUN
ajst-30166	63	18	cloud	cloud	PROPN
ajst-30166	63	19	diagram	diagram	NOUN
ajst-30166	63	20	of	of	ADP
ajst-30166	63	21	double	double	ADJ
ajst-30166	63	22	shoulder	shoulder	NOUN
ajst-30166	63	23	threads	thread	NOUN
ajst-30166	63	24	under	under	ADP
ajst-30166	63	25	torsional	torsional	ADJ
ajst-30166	63	26	loads	load	NOUN
ajst-30166	63	27	of	of	ADP
ajst-30166	63	28	40kn·m	40kn·m	NUM
ajst-30166	63	29	,	,	PUNCT
ajst-30166	63	30	50kn·m	50kn·m	NUM
ajst-30166	63	31	and	and	CCONJ
ajst-30166	63	32	60kn·m	60kn·m	NUM
ajst-30166	63	33	.	.	PUNCT
ajst-30166	64	1	as	as	SCONJ
ajst-30166	64	2	the	the	DET
ajst-30166	64	3	torque	torque	NOUN
ajst-30166	64	4	decreases	decrease	VERB
ajst-30166	64	5	,	,	PUNCT
ajst-30166	64	6	the	the	DET
ajst-30166	64	7	thread	thread	NOUN
ajst-30166	64	8	stress	stress	NOUN
ajst-30166	64	9	decreases	decrease	VERB
ajst-30166	64	10	,	,	PUNCT
ajst-30166	64	11	and	and	CCONJ
ajst-30166	64	12	the	the	DET
ajst-30166	64	13	stress	stress	NOUN
ajst-30166	64	14	exceeds	exceed	VERB
ajst-30166	64	15	the	the	DET
ajst-30166	64	16	yield	yield	NOUN
ajst-30166	64	17	limit	limit	NOUN
ajst-30166	64	18	(	(	PUNCT
ajst-30166	64	19	930mpa	930mpa	NUM
ajst-30166	64	20	)	)	PUNCT
ajst-30166	64	21	under	under	ADP
ajst-30166	64	22	the	the	DET
ajst-30166	64	23	60kn·m	60kn·m	NUM
ajst-30166	64	24	torque	torque	NOUN
ajst-30166	64	25	.	.	PUNCT
ajst-30166	65	1	under	under	ADP
ajst-30166	65	2	the	the	DET
ajst-30166	65	3	action	action	NOUN
ajst-30166	65	4	of	of	ADP
ajst-30166	65	5	torsional	torsional	ADJ
ajst-30166	65	6	load	load	NOUN
ajst-30166	65	7	,	,	PUNCT
ajst-30166	65	8	the	the	DET
ajst-30166	65	9	stress	stress	ADJ
ajst-30166	65	10	part	part	NOUN
ajst-30166	65	11	of	of	ADP
ajst-30166	65	12	the	the	DET
ajst-30166	65	13	thread	thread	NOUN
ajst-30166	65	14	of	of	ADP
ajst-30166	65	15	the	the	DET
ajst-30166	65	16	double	double	ADJ
ajst-30166	65	17	shoulder	shoulder	NOUN
ajst-30166	65	18	joint	joint	NOUN
ajst-30166	65	19	is	be	AUX
ajst-30166	65	20	at	at	ADP
ajst-30166	65	21	the	the	DET
ajst-30166	65	22	main	main	ADJ
ajst-30166	65	23	shoulder	shoulder	NOUN
ajst-30166	65	24	and	and	CCONJ
ajst-30166	65	25	the	the	DET
ajst-30166	65	26	secondary	secondary	ADJ
ajst-30166	65	27	shoulder	shoulder	NOUN
ajst-30166	65	28	,	,	PUNCT
ajst-30166	65	29	at	at	ADP
ajst-30166	65	30	this	this	DET
ajst-30166	65	31	time	time	NOUN
ajst-30166	65	32	,	,	PUNCT
ajst-30166	65	33	the	the	DET
ajst-30166	65	34	main	main	ADJ
ajst-30166	65	35	shoulder	shoulder	NOUN
ajst-30166	65	36	surface	surface	NOUN
ajst-30166	65	37	and	and	CCONJ
ajst-30166	65	38	the	the	DET
ajst-30166	65	39	secondary	secondary	ADJ
ajst-30166	65	40	shoulder	shoulder	NOUN
ajst-30166	65	41	surface	surface	NOUN
ajst-30166	65	42	are	be	AUX
ajst-30166	65	43	in	in	ADP
ajst-30166	65	44	contact	contact	NOUN
ajst-30166	65	45	with	with	ADP
ajst-30166	65	46	the	the	DET
ajst-30166	65	47	friction	friction	NOUN
ajst-30166	65	48	moment	moment	NOUN
ajst-30166	65	49	to	to	PART
ajst-30166	65	50	share	share	VERB
ajst-30166	65	51	part	part	NOUN
ajst-30166	65	52	of	of	ADP
ajst-30166	65	53	the	the	DET
ajst-30166	65	54	load	load	NOUN
ajst-30166	65	55	,	,	PUNCT
ajst-30166	65	56	and	and	CCONJ
ajst-30166	65	57	the	the	DET
ajst-30166	65	58	main	main	ADJ
ajst-30166	65	59	stress	stress	NOUN
ajst-30166	65	60	part	part	NOUN
ajst-30166	65	61	of	of	ADP
ajst-30166	65	62	the	the	DET
ajst-30166	65	63	thread	thread	NOUN
ajst-30166	65	64	is	be	AUX
ajst-30166	65	65	located	locate	VERB
ajst-30166	65	66	in	in	ADP
ajst-30166	65	67	a	a	DET
ajst-30166	65	68	circle	circle	NOUN
ajst-30166	65	69	of	of	ADP
ajst-30166	65	70	the	the	DET
ajst-30166	65	71	thread	thread	NOUN
ajst-30166	65	72	close	close	ADV
ajst-30166	65	73	to	to	ADP
ajst-30166	65	74	the	the	DET
ajst-30166	65	75	main	main	ADJ
ajst-30166	65	76	and	and	CCONJ
ajst-30166	65	77	the	the	DET
ajst-30166	65	78	secondary	secondary	ADJ
ajst-30166	65	79	shoulders	shoulder	NOUN
ajst-30166	65	80	,	,	PUNCT
ajst-30166	65	81	and	and	CCONJ
ajst-30166	65	82	the	the	DET
ajst-30166	65	83	distribution	distribution	NOUN
ajst-30166	65	84	of	of	ADP
ajst-30166	65	85	the	the	DET
ajst-30166	65	86	thread	thread	NOUN
ajst-30166	65	87	stress	stress	NOUN
ajst-30166	65	88	shows	show	VERB
ajst-30166	65	89	that	that	SCONJ
ajst-30166	65	90	the	the	DET
ajst-30166	65	91	maximum	maximum	ADJ
ajst-30166	65	92	stress	stress	NOUN
ajst-30166	65	93	at	at	ADP
ajst-30166	65	94	the	the	DET
ajst-30166	65	95	head	head	NOUN
ajst-30166	65	96	and	and	CCONJ
ajst-30166	65	97	the	the	DET
ajst-30166	65	98	tail	tail	NOUN
ajst-30166	65	99	is	be	AUX
ajst-30166	65	100	decreasing	decrease	VERB
ajst-30166	65	101	towards	towards	ADP
ajst-30166	65	102	the	the	DET
ajst-30166	65	103	middle	middle	NOUN
ajst-30166	65	104	in	in	ADP
ajst-30166	65	105	order	order	NOUN
ajst-30166	65	106	of	of	ADP
ajst-30166	65	107	the	the	DET
ajst-30166	65	108	distribution	distribution	NOUN
ajst-30166	65	109	.	.	PUNCT
ajst-30166	66	1	the	the	DET
ajst-30166	66	2	double	double	ADJ
ajst-30166	66	3	shoulder	shoulder	NOUN
ajst-30166	66	4	structure	structure	NOUN
ajst-30166	66	5	resists	resist	VERB
ajst-30166	66	6	the	the	DET
ajst-30166	66	7	torsional	torsional	ADJ
ajst-30166	66	8	load	load	NOUN
ajst-30166	66	9	through	through	ADP
ajst-30166	66	10	the	the	DET
ajst-30166	66	11	friction	friction	NOUN
ajst-30166	66	12	moment	moment	NOUN
ajst-30166	66	13	generated	generate	VERB
ajst-30166	66	14	between	between	ADP
ajst-30166	66	15	the	the	DET
ajst-30166	66	16	main	main	ADJ
ajst-30166	66	17	shoulder	shoulder	NOUN
ajst-30166	66	18	surface	surface	NOUN
ajst-30166	66	19	,	,	PUNCT
ajst-30166	66	20	the	the	DET
ajst-30166	66	21	secondary	secondary	ADJ
ajst-30166	66	22	shoulder	shoulder	NOUN
ajst-30166	66	23	surface	surface	NOUN
ajst-30166	66	24	and	and	CCONJ
ajst-30166	66	25	the	the	DET
ajst-30166	66	26	thread	thread	NOUN
ajst-30166	66	27	engaging	engage	VERB
ajst-30166	66	28	surface	surface	NOUN
ajst-30166	66	29	.	.	PUNCT
ajst-30166	67	1	compared	compare	VERB
ajst-30166	67	2	with	with	ADP
ajst-30166	67	3	api	api	NOUN
ajst-30166	67	4	joint	joint	ADJ
ajst-30166	67	5	threads	thread	NOUN
ajst-30166	67	6	,	,	PUNCT
ajst-30166	67	7	the	the	DET
ajst-30166	67	8	double	double	ADJ
ajst-30166	67	9	shoulder	shoulder	NOUN
ajst-30166	67	10	structure	structure	NOUN
ajst-30166	67	11	can	can	AUX
ajst-30166	67	12	reduce	reduce	VERB
ajst-30166	67	13	the	the	DET
ajst-30166	67	14	load	load	NOUN
ajst-30166	67	15	of	of	ADP
ajst-30166	67	16	the	the	DET
ajst-30166	67	17	threaded	threaded	ADJ
ajst-30166	67	18	part	part	NOUN
ajst-30166	67	19	,	,	PUNCT
ajst-30166	67	20	reduce	reduce	VERB
ajst-30166	67	21	the	the	DET
ajst-30166	67	22	load	load	NOUN
ajst-30166	67	23	bearing	bear	VERB
ajst-30166	67	24	pressure	pressure	NOUN
ajst-30166	67	25	of	of	ADP
ajst-30166	67	26	the	the	DET
ajst-30166	67	27	first	first	ADJ
ajst-30166	67	28	loop	loop	NOUN
ajst-30166	67	29	of	of	ADP
ajst-30166	67	30	threads	thread	NOUN
ajst-30166	67	31	,	,	PUNCT
ajst-30166	67	32	and	and	CCONJ
ajst-30166	67	33	increase	increase	VERB
ajst-30166	67	34	the	the	DET
ajst-30166	67	35	load	load	NOUN
ajst-30166	67	36	bearing	bearing	NOUN
ajst-30166	67	37	of	of	ADP
ajst-30166	67	38	the	the	DET
ajst-30166	67	39	last	last	ADJ
ajst-30166	67	40	loop	loop	NOUN
ajst-30166	67	41	of	of	ADP
ajst-30166	67	42	threads	thread	NOUN
ajst-30166	67	43	,	,	PUNCT
ajst-30166	67	44	so	so	SCONJ
ajst-30166	67	45	as	as	SCONJ
ajst-30166	67	46	to	to	PART
ajst-30166	67	47	make	make	VERB
ajst-30166	67	48	the	the	DET
ajst-30166	67	49	distribution	distribution	NOUN
ajst-30166	67	50	of	of	ADP
ajst-30166	67	51	the	the	DET
ajst-30166	67	52	stress	stress	NOUN
ajst-30166	67	53	more	more	ADJ
ajst-30166	67	54	uniform	uniform	NOUN
ajst-30166	67	55	and	and	CCONJ
ajst-30166	67	56	to	to	PART
ajst-30166	67	57	improve	improve	VERB
ajst-30166	67	58	the	the	DET
ajst-30166	67	59	performance	performance	NOUN
ajst-30166	67	60	of	of	ADP
ajst-30166	67	61	torsional	torsional	ADJ
ajst-30166	67	62	resistance	resistance	NOUN
ajst-30166	67	63	of	of	ADP
ajst-30166	67	64	the	the	DET
ajst-30166	67	65	threads	thread	NOUN
ajst-30166	67	66	.	.	PUNCT
ajst-30166	68	1	13	13	NUM
ajst-30166	68	2	figure	figure	NOUN
ajst-30166	68	3	8	8	NUM
ajst-30166	68	4	.	.	PUNCT
ajst-30166	68	5	comparison	comparison	NOUN
ajst-30166	68	6	of	of	ADP
ajst-30166	68	7	torsional	torsional	ADJ
ajst-30166	68	8	properties	property	NOUN
ajst-30166	68	9	of	of	ADP
ajst-30166	68	10	male	male	ADJ
ajst-30166	68	11	threads	thread	NOUN
ajst-30166	68	12	figure	figure	VERB
ajst-30166	68	13	9	9	NUM
ajst-30166	68	14	.	.	PUNCT
ajst-30166	68	15	comparison	comparison	NOUN
ajst-30166	68	16	of	of	ADP
ajst-30166	68	17	torsional	torsional	ADJ
ajst-30166	68	18	properties	property	NOUN
ajst-30166	68	19	of	of	ADP
ajst-30166	68	20	female	female	ADJ
ajst-30166	68	21	threads	thread	NOUN
ajst-30166	68	22	from	from	ADP
ajst-30166	68	23	fig.8	fig.8	PROPN
ajst-30166	68	24	and	and	CCONJ
ajst-30166	68	25	fig.9	fig.9	PROPN
ajst-30166	68	26	shows	show	VERB
ajst-30166	68	27	the	the	DET
ajst-30166	68	28	torque	torque	NOUN
ajst-30166	68	29	corresponding	correspond	VERB
ajst-30166	68	30	to	to	ADP
ajst-30166	68	31	the	the	DET
ajst-30166	68	32	maximum	maximum	ADJ
ajst-30166	68	33	stress	stress	NOUN
ajst-30166	68	34	value	value	NOUN
ajst-30166	68	35	of	of	ADP
ajst-30166	68	36	the	the	DET
ajst-30166	68	37	female	female	ADJ
ajst-30166	68	38	and	and	CCONJ
ajst-30166	68	39	male	male	ADJ
ajst-30166	68	40	threads	thread	NOUN
ajst-30166	68	41	,	,	PUNCT
ajst-30166	68	42	it	it	PRON
ajst-30166	68	43	can	can	AUX
ajst-30166	68	44	be	be	AUX
ajst-30166	68	45	seen	see	VERB
ajst-30166	68	46	that	that	SCONJ
ajst-30166	68	47	:	:	PUNCT
ajst-30166	68	48	the	the	DET
ajst-30166	68	49	maximum	maximum	ADJ
ajst-30166	68	50	stress	stress	NOUN
ajst-30166	68	51	value	value	NOUN
ajst-30166	68	52	of	of	ADP
ajst-30166	68	53	the	the	DET
ajst-30166	68	54	two	two	NUM
ajst-30166	68	55	structures	structure	NOUN
ajst-30166	68	56	and	and	CCONJ
ajst-30166	68	57	the	the	DET
ajst-30166	68	58	magnitude	magnitude	NOUN
ajst-30166	68	59	of	of	ADP
ajst-30166	68	60	the	the	DET
ajst-30166	68	61	torque	torque	NOUN
ajst-30166	68	62	load	load	NOUN
ajst-30166	68	63	is	be	AUX
ajst-30166	68	64	basically	basically	ADV
ajst-30166	68	65	a	a	DET
ajst-30166	68	66	linear	linear	ADJ
ajst-30166	68	67	change	change	NOUN
ajst-30166	68	68	in	in	ADP
ajst-30166	68	69	the	the	DET
ajst-30166	68	70	relationship	relationship	NOUN
ajst-30166	68	71	between	between	ADP
ajst-30166	68	72	the	the	DET
ajst-30166	68	73	maximum	maximum	ADJ
ajst-30166	68	74	stress	stress	NOUN
ajst-30166	68	75	value	value	NOUN
ajst-30166	68	76	and	and	CCONJ
ajst-30166	68	77	the	the	DET
ajst-30166	68	78	magnitude	magnitude	NOUN
ajst-30166	68	79	of	of	ADP
ajst-30166	68	80	the	the	DET
ajst-30166	68	81	torque	torque	NOUN
ajst-30166	68	82	load	load	NOUN
ajst-30166	68	83	,	,	PUNCT
ajst-30166	68	84	in	in	ADP
ajst-30166	68	85	the	the	DET
ajst-30166	68	86	same	same	ADJ
ajst-30166	68	87	torque	torque	NOUN
ajst-30166	68	88	load	load	NOUN
ajst-30166	68	89	,	,	PUNCT
ajst-30166	68	90	the	the	DET
ajst-30166	68	91	double	double	ADJ
ajst-30166	68	92	shoulder	shoulder	NOUN
ajst-30166	68	93	structure	structure	NOUN
ajst-30166	68	94	of	of	ADP
ajst-30166	68	95	the	the	DET
ajst-30166	68	96	peak	peak	NOUN
ajst-30166	68	97	stress	stress	NOUN
ajst-30166	68	98	is	be	AUX
ajst-30166	68	99	lower	low	ADJ
ajst-30166	68	100	than	than	ADP
ajst-30166	68	101	that	that	PRON
ajst-30166	68	102	of	of	ADP
ajst-30166	68	103	the	the	DET
ajst-30166	68	104	api	api	NOUN
ajst-30166	68	105	structure	structure	NOUN
ajst-30166	68	106	,	,	PUNCT
ajst-30166	68	107	and	and	CCONJ
ajst-30166	68	108	as	as	ADP
ajst-30166	68	109	the	the	DET
ajst-30166	68	110	torque	torque	NOUN
ajst-30166	68	111	increases	increase	NOUN
ajst-30166	68	112	,	,	PUNCT
ajst-30166	68	113	the	the	DET
ajst-30166	68	114	torsional	torsional	ADJ
ajst-30166	68	115	performance	performance	NOUN
ajst-30166	68	116	of	of	ADP
ajst-30166	68	117	the	the	DET
ajst-30166	68	118	double	double	ADJ
ajst-30166	68	119	shoulder	shoulder	NOUN
ajst-30166	68	120	structure	structure	NOUN
ajst-30166	68	121	improves	improve	VERB
ajst-30166	68	122	even	even	ADV
ajst-30166	68	123	more	more	ADJ
ajst-30166	68	124	.	.	PUNCT
ajst-30166	69	1	according	accord	VERB
ajst-30166	69	2	to	to	ADP
ajst-30166	69	3	the	the	DET
ajst-30166	69	4	maximum	maximum	ADJ
ajst-30166	69	5	stress	stress	NOUN
ajst-30166	69	6	as	as	ADP
ajst-30166	69	7	the	the	DET
ajst-30166	69	8	strength	strength	NOUN
ajst-30166	69	9	evaluation	evaluation	NOUN
ajst-30166	69	10	criterion	criterion	NOUN
ajst-30166	69	11	,	,	PUNCT
ajst-30166	69	12	the	the	DET
ajst-30166	69	13	comparison	comparison	NOUN
ajst-30166	69	14	of	of	ADP
ajst-30166	69	15	the	the	DET
ajst-30166	69	16	results	result	NOUN
ajst-30166	69	17	shows	show	VERB
ajst-30166	69	18	that	that	SCONJ
ajst-30166	69	19	the	the	DET
ajst-30166	69	20	torsional	torsional	ADJ
ajst-30166	69	21	performance	performance	NOUN
ajst-30166	69	22	of	of	ADP
ajst-30166	69	23	the	the	DET
ajst-30166	69	24	doubleshouldered	doubleshouldere	VERB
ajst-30166	69	25	structure	structure	NOUN
ajst-30166	69	26	is	be	AUX
ajst-30166	69	27	about	about	ADV
ajst-30166	69	28	20.8	20.8	NUM
ajst-30166	69	29	%	%	NOUN
ajst-30166	69	30	higher	high	ADJ
ajst-30166	69	31	than	than	ADP
ajst-30166	69	32	that	that	PRON
ajst-30166	69	33	of	of	ADP
ajst-30166	69	34	the	the	DET
ajst-30166	69	35	api	api	NOUN
ajst-30166	69	36	structure	structure	NOUN
ajst-30166	69	37	under	under	ADP
ajst-30166	69	38	60kn·m	60kn·m	NUM
ajst-30166	69	39	torque	torque	NOUN
ajst-30166	69	40	.	.	PUNCT
ajst-30166	70	1	4	4	X
ajst-30166	70	2	.	.	NOUN
ajst-30166	70	3	thread	thread	NOUN
ajst-30166	70	4	fatigue	fatigue	NOUN
ajst-30166	70	5	life	life	NOUN
ajst-30166	70	6	analysis	analysis	NOUN
ajst-30166	70	7	of	of	ADP
ajst-30166	70	8	double	double	ADJ
ajst-30166	70	9	shoulder	shoulder	NOUN
ajst-30166	70	10	joints	joint	NOUN
ajst-30166	70	11	4.1	4.1	NUM
ajst-30166	70	12	.	.	PUNCT
ajst-30166	71	1	fatigue	fatigue	NOUN
ajst-30166	71	2	damage	damage	NOUN
ajst-30166	71	3	and	and	CCONJ
ajst-30166	71	4	fatigue	fatigue	NOUN
ajst-30166	71	5	life	life	NOUN
ajst-30166	71	6	of	of	ADP
ajst-30166	71	7	drilling	drilling	NOUN
ajst-30166	71	8	tool	tool	NOUN
ajst-30166	71	9	joints	joint	NOUN
ajst-30166	71	10	fatigue	fatigue	NOUN
ajst-30166	71	11	damage	damage	NOUN
ajst-30166	71	12	and	and	CCONJ
ajst-30166	71	13	fatigue	fatigue	NOUN
ajst-30166	71	14	life	life	NOUN
ajst-30166	71	15	are	be	AUX
ajst-30166	71	16	key	key	ADJ
ajst-30166	71	17	concepts	concept	NOUN
ajst-30166	71	18	in	in	ADP
ajst-30166	71	19	assessing	assess	VERB
ajst-30166	71	20	the	the	DET
ajst-30166	71	21	performance	performance	NOUN
ajst-30166	71	22	of	of	ADP
ajst-30166	71	23	materials	material	NOUN
ajst-30166	71	24	and	and	CCONJ
ajst-30166	71	25	structures	structure	NOUN
ajst-30166	71	26	under	under	ADP
ajst-30166	71	27	cyclic	cyclic	ADJ
ajst-30166	71	28	loading	loading	NOUN
ajst-30166	71	29	.	.	PUNCT
ajst-30166	72	1	fatigue	fatigue	NOUN
ajst-30166	72	2	damage	damage	NOUN
ajst-30166	72	3	refers	refer	VERB
ajst-30166	72	4	to	to	ADP
ajst-30166	72	5	the	the	DET
ajst-30166	72	6	phenomenon	phenomenon	NOUN
ajst-30166	72	7	of	of	ADP
ajst-30166	72	8	progressive	progressive	ADJ
ajst-30166	72	9	damage	damage	NOUN
ajst-30166	72	10	accumulation	accumulation	NOUN
ajst-30166	72	11	until	until	ADP
ajst-30166	72	12	rupture	rupture	NOUN
ajst-30166	72	13	that	that	PRON
ajst-30166	72	14	occurs	occur	VERB
ajst-30166	72	15	when	when	SCONJ
ajst-30166	72	16	a	a	DET
ajst-30166	72	17	material	material	NOUN
ajst-30166	72	18	is	be	AUX
ajst-30166	72	19	subjected	subject	VERB
ajst-30166	72	20	to	to	ADP
ajst-30166	72	21	alternating	alternate	VERB
ajst-30166	72	22	stresses	stress	NOUN
ajst-30166	72	23	below	below	ADP
ajst-30166	72	24	its	its	PRON
ajst-30166	72	25	static	static	ADJ
ajst-30166	72	26	load	load	NOUN
ajst-30166	72	27	limit	limit	NOUN
ajst-30166	72	28	strength	strength	NOUN
ajst-30166	72	29	,	,	PUNCT
ajst-30166	72	30	or	or	CCONJ
ajst-30166	72	31	even	even	ADV
ajst-30166	72	32	below	below	ADP
ajst-30166	72	33	its	its	PRON
ajst-30166	72	34	yield	yield	NOUN
ajst-30166	72	35	strength	strength	NOUN
ajst-30166	72	36	,	,	PUNCT
ajst-30166	72	37	for	for	ADP
ajst-30166	72	38	a	a	DET
ajst-30166	72	39	long	long	ADJ
ajst-30166	72	40	period	period	NOUN
ajst-30166	72	41	of	of	ADP
ajst-30166	72	42	time	time	NOUN
ajst-30166	72	43	.	.	PUNCT
ajst-30166	73	1	it	it	PRON
ajst-30166	73	2	is	be	AUX
ajst-30166	73	3	significantly	significantly	ADV
ajst-30166	73	4	different	different	ADJ
ajst-30166	73	5	from	from	ADP
ajst-30166	73	6	static	static	ADJ
ajst-30166	73	7	load	load	NOUN
ajst-30166	73	8	damage	damage	NOUN
ajst-30166	73	9	,	,	PUNCT
ajst-30166	73	10	characterized	characterize	VERB
ajst-30166	73	11	by	by	ADP
ajst-30166	73	12	low	low	ADJ
ajst-30166	73	13	stress	stress	NOUN
ajst-30166	73	14	,	,	PUNCT
ajst-30166	73	15	suddenness	suddenness	NOUN
ajst-30166	73	16	and	and	CCONJ
ajst-30166	73	17	sensitivity	sensitivity	NOUN
ajst-30166	73	18	to	to	PART
ajst-30166	73	19	material	material	VERB
ajst-30166	73	20	microscopic	microscopic	ADJ
ajst-30166	73	21	defects	defect	NOUN
ajst-30166	73	22	.	.	PUNCT
ajst-30166	74	1	according	accord	VERB
ajst-30166	74	2	to	to	ADP
ajst-30166	74	3	the	the	DET
ajst-30166	74	4	number	number	NOUN
ajst-30166	74	5	of	of	ADP
ajst-30166	74	6	cycles	cycle	NOUN
ajst-30166	74	7	and	and	CCONJ
ajst-30166	74	8	stress	stress	NOUN
ajst-30166	74	9	level	level	NOUN
ajst-30166	74	10	,	,	PUNCT
ajst-30166	74	11	fatigue	fatigue	NOUN
ajst-30166	74	12	damage	damage	NOUN
ajst-30166	74	13	is	be	AUX
ajst-30166	74	14	divided	divide	VERB
ajst-30166	74	15	into	into	ADP
ajst-30166	74	16	high	high	ADJ
ajst-30166	74	17	-	-	PUNCT
ajst-30166	74	18	cycle	cycle	NOUN
ajst-30166	74	19	fatigue	fatigue	NOUN
ajst-30166	74	20	and	and	CCONJ
ajst-30166	74	21	low	low	ADJ
ajst-30166	74	22	-	-	PUNCT
ajst-30166	74	23	cycle	cycle	NOUN
ajst-30166	74	24	fatigue	fatigue	NOUN
ajst-30166	74	25	,	,	PUNCT
ajst-30166	74	26	the	the	DET
ajst-30166	74	27	former	former	ADJ
ajst-30166	74	28	cycle	cycle	NOUN
ajst-30166	74	29	number	number	NOUN
ajst-30166	74	30	is	be	AUX
ajst-30166	74	31	greater	great	ADJ
ajst-30166	74	32	than	than	ADP
ajst-30166	74	33	104	104	NUM
ajst-30166	74	34	times	time	NOUN
ajst-30166	74	35	less	less	ADJ
ajst-30166	74	36	than	than	ADP
ajst-30166	74	37	107	107	NUM
ajst-30166	74	38	times	time	NOUN
ajst-30166	74	39	,	,	PUNCT
ajst-30166	74	40	elastic	elastic	ADJ
ajst-30166	74	41	strain	strain	NOUN
ajst-30166	74	42	dominated	dominate	VERB
ajst-30166	74	43	;	;	PUNCT
ajst-30166	74	44	the	the	DET
ajst-30166	74	45	latter	latter	ADJ
ajst-30166	74	46	cycle	cycle	NOUN
ajst-30166	74	47	number	number	NOUN
ajst-30166	74	48	is	be	AUX
ajst-30166	74	49	around	around	ADV
ajst-30166	74	50	104	104	NUM
ajst-30166	74	51	times	time	NOUN
ajst-30166	74	52	,	,	PUNCT
ajst-30166	74	53	plastic	plastic	ADJ
ajst-30166	74	54	deformation	deformation	NOUN
ajst-30166	74	55	plays	play	VERB
ajst-30166	74	56	a	a	DET
ajst-30166	74	57	major	major	ADJ
ajst-30166	74	58	role[13	role[13	NOUN
ajst-30166	74	59	]	]	PUNCT
ajst-30166	74	60	.	.	PUNCT
ajst-30166	75	1	fatigue	fatigue	NOUN
ajst-30166	75	2	life	life	NOUN
ajst-30166	75	3	,	,	PUNCT
ajst-30166	75	4	on	on	ADP
ajst-30166	75	5	the	the	DET
ajst-30166	75	6	other	other	ADJ
ajst-30166	75	7	hand	hand	NOUN
ajst-30166	75	8	,	,	PUNCT
ajst-30166	75	9	is	be	AUX
ajst-30166	75	10	the	the	DET
ajst-30166	75	11	number	number	NOUN
ajst-30166	75	12	of	of	ADP
ajst-30166	75	13	cycles	cycle	NOUN
ajst-30166	75	14	or	or	CCONJ
ajst-30166	75	15	time	time	NOUN
ajst-30166	75	16	that	that	PRON
ajst-30166	75	17	a	a	DET
ajst-30166	75	18	material	material	NOUN
ajst-30166	75	19	or	or	CCONJ
ajst-30166	75	20	structure	structure	NOUN
ajst-30166	75	21	undergoes	undergoe	NOUN
ajst-30166	75	22	from	from	ADP
ajst-30166	75	23	the	the	DET
ajst-30166	75	24	beginning	beginning	NOUN
ajst-30166	75	25	of	of	ADP
ajst-30166	75	26	cyclic	cyclic	ADJ
ajst-30166	75	27	loading	loading	NOUN
ajst-30166	75	28	until	until	SCONJ
ajst-30166	75	29	fatigue	fatigue	NOUN
ajst-30166	75	30	damage	damage	NOUN
ajst-30166	75	31	occurs	occur	VERB
ajst-30166	75	32	.	.	PUNCT
ajst-30166	76	1	there	there	PRON
ajst-30166	76	2	are	be	VERB
ajst-30166	76	3	various	various	ADJ
ajst-30166	76	4	models	model	NOUN
ajst-30166	76	5	for	for	ADP
ajst-30166	76	6	calculating	calculate	VERB
ajst-30166	76	7	fatigue	fatigue	NOUN
ajst-30166	76	8	life	life	NOUN
ajst-30166	76	9	,	,	PUNCT
ajst-30166	76	10	such	such	ADJ
ajst-30166	76	11	as	as	ADP
ajst-30166	76	12	the	the	DET
ajst-30166	76	13	twostage	twostage	NOUN
ajst-30166	76	14	model	model	NOUN
ajst-30166	76	15	that	that	PRON
ajst-30166	76	16	divides	divide	VERB
ajst-30166	76	17	it	it	PRON
ajst-30166	76	18	into	into	ADP
ajst-30166	76	19	crack	crack	VERB
ajst-30166	76	20	formation	formation	NOUN
ajst-30166	76	21	and	and	CCONJ
ajst-30166	76	22	expansion	expansion	NOUN
ajst-30166	76	23	stages	stage	NOUN
ajst-30166	76	24	;	;	PUNCT
ajst-30166	76	25	the	the	DET
ajst-30166	76	26	three	three	NUM
ajst-30166	76	27	-	-	PUNCT
ajst-30166	76	28	stage	stage	NOUN
ajst-30166	76	29	model	model	NOUN
ajst-30166	76	30	that	that	PRON
ajst-30166	76	31	further	far	ADV
ajst-30166	76	32	subdivides	subdivide	VERB
ajst-30166	76	33	the	the	DET
ajst-30166	76	34	small	small	ADJ
ajst-30166	76	35	crack	crack	NOUN
ajst-30166	76	36	stage	stage	NOUN
ajst-30166	76	37	;	;	PUNCT
ajst-30166	76	38	and	and	CCONJ
ajst-30166	76	39	the	the	DET
ajst-30166	76	40	multi	multi	ADJ
ajst-30166	76	41	-	-	ADJ
ajst-30166	76	42	stage	stage	ADJ
ajst-30166	76	43	model	model	NOUN
ajst-30166	76	44	that	that	PRON
ajst-30166	76	45	refines	refine	VERB
ajst-30166	76	46	the	the	DET
ajst-30166	76	47	small	small	ADJ
ajst-30166	76	48	cracks	crack	NOUN
ajst-30166	76	49	by	by	ADP
ajst-30166	76	50	microscopic	microscopic	ADJ
ajst-30166	76	51	,	,	PUNCT
ajst-30166	76	52	physical	physical	ADJ
ajst-30166	76	53	,	,	PUNCT
ajst-30166	76	54	and	and	CCONJ
ajst-30166	76	55	structural	structural	ADJ
ajst-30166	76	56	levels	level	NOUN
ajst-30166	76	57	.	.	PUNCT
ajst-30166	77	1	accurate	accurate	ADJ
ajst-30166	77	2	understanding	understanding	NOUN
ajst-30166	77	3	of	of	ADP
ajst-30166	77	4	the	the	DET
ajst-30166	77	5	fatigue	fatigue	NOUN
ajst-30166	77	6	damage	damage	NOUN
ajst-30166	77	7	mechanism	mechanism	NOUN
ajst-30166	77	8	and	and	CCONJ
ajst-30166	77	9	fatigue	fatigue	NOUN
ajst-30166	77	10	life	life	NOUN
ajst-30166	77	11	calculation	calculation	NOUN
ajst-30166	77	12	method	method	NOUN
ajst-30166	77	13	is	be	AUX
ajst-30166	77	14	crucial	crucial	ADJ
ajst-30166	77	15	for	for	ADP
ajst-30166	77	16	predicting	predict	VERB
ajst-30166	77	17	the	the	DET
ajst-30166	77	18	reliability	reliability	NOUN
ajst-30166	77	19	and	and	CCONJ
ajst-30166	77	20	service	service	NOUN
ajst-30166	77	21	life	life	NOUN
ajst-30166	77	22	of	of	ADP
ajst-30166	77	23	double	double	ADJ
ajst-30166	77	24	-	-	PUNCT
ajst-30166	77	25	shouldered	shouldered	ADJ
ajst-30166	77	26	drilling	drilling	NOUN
ajst-30166	77	27	tool	tool	NOUN
ajst-30166	77	28	threads	thread	NOUN
ajst-30166	77	29	under	under	ADP
ajst-30166	77	30	complex	complex	ADJ
ajst-30166	77	31	downhole	downhole	NOUN
ajst-30166	77	32	cyclic	cyclic	NOUN
ajst-30166	77	33	loading	loading	NOUN
ajst-30166	77	34	conditions[14	conditions[14	PROPN
ajst-30166	77	35	]	]	X
ajst-30166	77	36	.	.	PUNCT
ajst-30166	78	1	4.2	4.2	NUM
ajst-30166	78	2	.	.	PUNCT
ajst-30166	78	3	calculation	calculation	NOUN
ajst-30166	78	4	of	of	ADP
ajst-30166	78	5	drilling	drilling	NOUN
ajst-30166	78	6	tool	tool	NOUN
ajst-30166	78	7	thread	thread	NOUN
ajst-30166	78	8	fatigue	fatigue	NOUN
ajst-30166	78	9	life	life	NOUN
ajst-30166	78	10	this	this	DET
ajst-30166	78	11	paper	paper	NOUN
ajst-30166	78	12	mainly	mainly	ADV
ajst-30166	78	13	analyzes	analyze	VERB
ajst-30166	78	14	the	the	DET
ajst-30166	78	15	research	research	NOUN
ajst-30166	78	16	drilling	drilling	NOUN
ajst-30166	78	17	tool	tool	NOUN
ajst-30166	78	18	joint	joint	ADJ
ajst-30166	78	19	threads	thread	NOUN
ajst-30166	78	20	under	under	ADP
ajst-30166	78	21	high	high	ADJ
ajst-30166	78	22	torque	torque	NOUN
ajst-30166	78	23	load	load	NOUN
ajst-30166	78	24	,	,	PUNCT
ajst-30166	78	25	based	base	VERB
ajst-30166	78	26	on	on	ADP
ajst-30166	78	27	the	the	DET
ajst-30166	78	28	finite	finite	ADJ
ajst-30166	78	29	element	element	NOUN
ajst-30166	78	30	life	life	NOUN
ajst-30166	78	31	analysis	analysis	NOUN
ajst-30166	78	32	software	software	NOUN
ajst-30166	78	33	,	,	PUNCT
ajst-30166	78	34	simulation	simulation	NOUN
ajst-30166	78	35	and	and	CCONJ
ajst-30166	78	36	analysis	analysis	NOUN
ajst-30166	78	37	under	under	ADP
ajst-30166	78	38	torque	torque	NOUN
ajst-30166	78	39	load	load	NOUN
ajst-30166	78	40	,	,	PUNCT
ajst-30166	78	41	to	to	PART
ajst-30166	78	42	get	get	VERB
ajst-30166	78	43	the	the	DET
ajst-30166	78	44	life	life	NOUN
ajst-30166	78	45	of	of	ADP
ajst-30166	78	46	drilling	drilling	NOUN
ajst-30166	78	47	tool	tool	NOUN
ajst-30166	78	48	threads	thread	NOUN
ajst-30166	78	49	and	and	CCONJ
ajst-30166	78	50	evaluate	evaluate	VERB
ajst-30166	78	51	its	its	PRON
ajst-30166	78	52	fatigue	fatigue	NOUN
ajst-30166	78	53	life	life	NOUN
ajst-30166	78	54	.	.	PUNCT
ajst-30166	79	1	the	the	DET
ajst-30166	79	2	calculation	calculation	NOUN
ajst-30166	79	3	results	result	NOUN
ajst-30166	79	4	are	be	AUX
ajst-30166	79	5	as	as	SCONJ
ajst-30166	79	6	follows	follow	VERB
ajst-30166	79	7	:	:	PUNCT
ajst-30166	79	8	(	(	PUNCT
ajst-30166	79	9	a	a	X
ajst-30166	79	10	)	)	PUNCT
ajst-30166	79	11	60kn·m	60kn·m	NUM
ajst-30166	79	12	(	(	PUNCT
ajst-30166	79	13	b	b	NOUN
ajst-30166	79	14	)	)	PUNCT
ajst-30166	79	15	50kn·m	50kn·m	NOUN
ajst-30166	79	16	(	(	PUNCT
ajst-30166	79	17	c	c	NOUN
ajst-30166	79	18	)	)	PUNCT
ajst-30166	79	19	40kn·m	40kn·m	NUM
ajst-30166	79	20	figure	figure	NOUN
ajst-30166	79	21	10	10	NUM
ajst-30166	79	22	.	.	PUNCT
ajst-30166	80	1	api	api	NOUN
ajst-30166	80	2	fatigue	fatigue	NOUN
ajst-30166	80	3	life	life	NOUN
ajst-30166	80	4	cloud	cloud	NOUN
ajst-30166	80	5	at	at	ADP
ajst-30166	80	6	thread	thread	NOUN
ajst-30166	80	7	torque	torque	NOUN
ajst-30166	80	8	14	14	NUM
ajst-30166	80	9	fig.10	fig.10	ADV
ajst-30166	80	10	shows	show	VERB
ajst-30166	80	11	the	the	DET
ajst-30166	80	12	cloud	cloud	ADJ
ajst-30166	80	13	diagram	diagram	NOUN
ajst-30166	80	14	of	of	ADP
ajst-30166	80	15	the	the	DET
ajst-30166	80	16	number	number	NOUN
ajst-30166	80	17	of	of	ADP
ajst-30166	80	18	fatigue	fatigue	NOUN
ajst-30166	80	19	cycles	cycle	NOUN
ajst-30166	80	20	under	under	ADP
ajst-30166	80	21	40kn·m	40kn·m	NUM
ajst-30166	80	22	,	,	PUNCT
ajst-30166	80	23	50kn·m	50kn·m	NUM
ajst-30166	80	24	,	,	PUNCT
ajst-30166	80	25	and	and	CCONJ
ajst-30166	80	26	60kn·m	60kn·m	NUM
ajst-30166	80	27	torsional	torsional	ADJ
ajst-30166	80	28	loads	load	NOUN
ajst-30166	80	29	for	for	ADP
ajst-30166	80	30	api	api	NOUN
ajst-30166	80	31	.	.	PUNCT
ajst-30166	81	1	although	although	SCONJ
ajst-30166	81	2	the	the	DET
ajst-30166	81	3	maximum	maximum	ADJ
ajst-30166	81	4	stress	stress	NOUN
ajst-30166	81	5	of	of	ADP
ajst-30166	81	6	the	the	DET
ajst-30166	81	7	female	female	ADJ
ajst-30166	81	8	buckle	buckle	NOUN
ajst-30166	81	9	is	be	AUX
ajst-30166	81	10	greater	great	ADJ
ajst-30166	81	11	than	than	ADP
ajst-30166	81	12	the	the	DET
ajst-30166	81	13	maximum	maximum	ADJ
ajst-30166	81	14	stress	stress	NOUN
ajst-30166	81	15	of	of	ADP
ajst-30166	81	16	the	the	DET
ajst-30166	81	17	male	male	ADJ
ajst-30166	81	18	buckle	buckle	NOUN
ajst-30166	81	19	,	,	PUNCT
ajst-30166	81	20	the	the	DET
ajst-30166	81	21	three	three	NUM
ajst-30166	81	22	results	result	NOUN
ajst-30166	81	23	are	be	AUX
ajst-30166	81	24	all	all	PRON
ajst-30166	81	25	male	male	ADJ
ajst-30166	81	26	buckle	buckle	NOUN
ajst-30166	81	27	fatigue	fatigue	NOUN
ajst-30166	81	28	life	life	NOUN
ajst-30166	81	29	is	be	AUX
ajst-30166	81	30	less	less	ADJ
ajst-30166	81	31	than	than	ADP
ajst-30166	81	32	the	the	DET
ajst-30166	81	33	fatigue	fatigue	NOUN
ajst-30166	81	34	life	life	NOUN
ajst-30166	81	35	of	of	ADP
ajst-30166	81	36	the	the	DET
ajst-30166	81	37	female	female	ADJ
ajst-30166	81	38	buckle	buckle	NOUN
ajst-30166	81	39	,	,	PUNCT
ajst-30166	81	40	indicating	indicate	VERB
ajst-30166	81	41	that	that	SCONJ
ajst-30166	81	42	the	the	DET
ajst-30166	81	43	high	high	ADJ
ajst-30166	81	44	stress	stress	NOUN
ajst-30166	81	45	level	level	NOUN
ajst-30166	81	46	of	of	ADP
ajst-30166	81	47	the	the	DET
ajst-30166	81	48	male	male	ADJ
ajst-30166	81	49	buckle	buckle	NOUN
ajst-30166	81	50	has	have	VERB
ajst-30166	81	51	a	a	DET
ajst-30166	81	52	wider	wide	ADJ
ajst-30166	81	53	range	range	NOUN
ajst-30166	81	54	,	,	PUNCT
ajst-30166	81	55	resulting	result	VERB
ajst-30166	81	56	in	in	ADP
ajst-30166	81	57	a	a	DET
ajst-30166	81	58	lower	low	ADJ
ajst-30166	81	59	number	number	NOUN
ajst-30166	81	60	of	of	ADP
ajst-30166	81	61	fatigue	fatigue	NOUN
ajst-30166	81	62	cycles	cycle	NOUN
ajst-30166	81	63	of	of	ADP
ajst-30166	81	64	the	the	DET
ajst-30166	81	65	male	male	ADJ
ajst-30166	81	66	buckle	buckle	NOUN
ajst-30166	81	67	,	,	PUNCT
ajst-30166	81	68	and	and	CCONJ
ajst-30166	81	69	they	they	PRON
ajst-30166	81	70	all	all	PRON
ajst-30166	81	71	appeared	appear	VERB
ajst-30166	81	72	in	in	ADP
ajst-30166	81	73	the	the	DET
ajst-30166	81	74	first	first	ADJ
ajst-30166	81	75	ring	ring	NOUN
ajst-30166	81	76	of	of	ADP
ajst-30166	81	77	the	the	DET
ajst-30166	81	78	male	male	ADJ
ajst-30166	81	79	buckle	buckle	NOUN
ajst-30166	81	80	,	,	PUNCT
ajst-30166	81	81	which	which	PRON
ajst-30166	81	82	is	be	AUX
ajst-30166	81	83	in	in	ADP
ajst-30166	81	84	line	line	NOUN
ajst-30166	81	85	with	with	ADP
ajst-30166	81	86	the	the	DET
ajst-30166	81	87	engineering	engineering	NOUN
ajst-30166	81	88	of	of	ADP
ajst-30166	81	89	the	the	DET
ajst-30166	81	90	first	first	ADJ
ajst-30166	81	91	ring	ring	NOUN
ajst-30166	81	92	of	of	ADP
ajst-30166	81	93	the	the	DET
ajst-30166	81	94	male	male	ADJ
ajst-30166	81	95	buckle	buckle	NOUN
ajst-30166	81	96	is	be	AUX
ajst-30166	81	97	prone	prone	ADJ
ajst-30166	81	98	to	to	ADP
ajst-30166	81	99	the	the	DET
ajst-30166	81	100	occurrence	occurrence	NOUN
ajst-30166	81	101	of	of	ADP
ajst-30166	81	102	fatigue	fatigue	NOUN
ajst-30166	81	103	fracture	fracture	NOUN
ajst-30166	81	104	phenomenon	phenomenon	NOUN
ajst-30166	81	105	.	.	PUNCT
ajst-30166	82	1	figure	figure	VERB
ajst-30166	82	2	11	11	NUM
ajst-30166	82	3	.	.	PUNCT
ajst-30166	83	1	fatigue	fatigue	NOUN
ajst-30166	83	2	life	life	NOUN
ajst-30166	83	3	curves	curve	NOUN
ajst-30166	83	4	at	at	ADP
ajst-30166	83	5	api	api	NOUN
ajst-30166	83	6	thread	thread	NOUN
ajst-30166	83	7	torque	torque	NOUN
ajst-30166	83	8	fig.11	fig.11	PROPN
ajst-30166	83	9	shows	show	VERB
ajst-30166	83	10	the	the	DET
ajst-30166	83	11	fatigue	fatigue	NOUN
ajst-30166	83	12	life	life	NOUN
ajst-30166	83	13	of	of	ADP
ajst-30166	83	14	api	api	NOUN
ajst-30166	83	15	joints	joint	NOUN
ajst-30166	83	16	versus	versus	ADP
ajst-30166	83	17	torque	torque	NOUN
ajst-30166	83	18	load	load	NOUN
ajst-30166	83	19	.	.	PUNCT
ajst-30166	84	1	as	as	ADP
ajst-30166	84	2	the	the	DET
ajst-30166	84	3	torque	torque	NOUN
ajst-30166	84	4	increases	increase	NOUN
ajst-30166	84	5	,	,	PUNCT
ajst-30166	84	6	the	the	DET
ajst-30166	84	7	number	number	NOUN
ajst-30166	84	8	of	of	ADP
ajst-30166	84	9	fatigue	fatigue	NOUN
ajst-30166	84	10	cycles	cycle	NOUN
ajst-30166	84	11	of	of	ADP
ajst-30166	84	12	male	male	ADJ
ajst-30166	84	13	and	and	CCONJ
ajst-30166	84	14	female	female	ADJ
ajst-30166	84	15	buckles	buckle	NOUN
ajst-30166	84	16	of	of	ADP
ajst-30166	84	17	api	api	NOUN
ajst-30166	84	18	structure	structure	NOUN
ajst-30166	84	19	decreases	decrease	VERB
ajst-30166	84	20	,	,	PUNCT
ajst-30166	84	21	and	and	CCONJ
ajst-30166	84	22	under	under	ADP
ajst-30166	84	23	the	the	DET
ajst-30166	84	24	torque	torque	NOUN
ajst-30166	84	25	of	of	ADP
ajst-30166	84	26	60kn·m	60kn·m	NUM
ajst-30166	84	27	,	,	PUNCT
ajst-30166	84	28	the	the	DET
ajst-30166	84	29	number	number	NOUN
ajst-30166	84	30	of	of	ADP
ajst-30166	84	31	fatigue	fatigue	NOUN
ajst-30166	84	32	cycles	cycle	NOUN
ajst-30166	84	33	decreases	decrease	VERB
ajst-30166	84	34	to	to	ADP
ajst-30166	84	35	the	the	DET
ajst-30166	84	36	order	order	NOUN
ajst-30166	84	37	of	of	ADP
ajst-30166	84	38	104	104	NUM
ajst-30166	84	39	.	.	PUNCT
ajst-30166	85	1	the	the	DET
ajst-30166	85	2	number	number	NOUN
ajst-30166	85	3	of	of	ADP
ajst-30166	85	4	fatigue	fatigue	NOUN
ajst-30166	85	5	cycles	cycle	NOUN
ajst-30166	85	6	of	of	ADP
ajst-30166	85	7	the	the	DET
ajst-30166	85	8	male	male	ADJ
ajst-30166	85	9	buckle	buckle	NOUN
ajst-30166	85	10	are	be	AUX
ajst-30166	85	11	smaller	small	ADJ
ajst-30166	85	12	than	than	ADP
ajst-30166	85	13	the	the	DET
ajst-30166	85	14	female	female	ADJ
ajst-30166	85	15	buckle	buckle	NOUN
ajst-30166	85	16	,	,	PUNCT
ajst-30166	85	17	indicating	indicate	VERB
ajst-30166	85	18	that	that	SCONJ
ajst-30166	85	19	the	the	DET
ajst-30166	85	20	male	male	ADJ
ajst-30166	85	21	buckle	buckle	NOUN
ajst-30166	85	22	is	be	AUX
ajst-30166	85	23	more	more	ADV
ajst-30166	85	24	prone	prone	ADJ
ajst-30166	85	25	to	to	ADP
ajst-30166	85	26	fatigue	fatigue	NOUN
ajst-30166	85	27	failure	failure	NOUN
ajst-30166	85	28	,	,	PUNCT
ajst-30166	85	29	need	need	VERB
ajst-30166	85	30	to	to	PART
ajst-30166	85	31	improve	improve	VERB
ajst-30166	85	32	the	the	DET
ajst-30166	85	33	fatigue	fatigue	NOUN
ajst-30166	85	34	performance	performance	NOUN
ajst-30166	85	35	of	of	ADP
ajst-30166	85	36	api	api	NOUN
ajst-30166	85	37	joints	joint	NOUN
ajst-30166	85	38	.	.	PUNCT
ajst-30166	86	1	(	(	PUNCT
ajst-30166	86	2	a	a	X
ajst-30166	86	3	)	)	PUNCT
ajst-30166	86	4	60kn·m	60kn·m	NUM
ajst-30166	86	5	(	(	PUNCT
ajst-30166	86	6	b	b	NOUN
ajst-30166	86	7	)	)	PUNCT
ajst-30166	86	8	50kn·m	50kn·m	NOUN
ajst-30166	86	9	(	(	PUNCT
ajst-30166	86	10	c	c	NOUN
ajst-30166	86	11	)	)	PUNCT
ajst-30166	86	12	40kn·m	40kn·m	NUM
ajst-30166	86	13	figure	figure	NOUN
ajst-30166	86	14	12	12	NUM
ajst-30166	86	15	.	.	PUNCT
ajst-30166	87	1	fatigue	fatigue	NOUN
ajst-30166	87	2	life	life	NOUN
ajst-30166	87	3	cloud	cloud	NOUN
ajst-30166	87	4	under	under	ADP
ajst-30166	87	5	double	double	ADJ
ajst-30166	87	6	shoulder	shoulder	NOUN
ajst-30166	87	7	thread	thread	NOUN
ajst-30166	87	8	torque	torque	NOUN
ajst-30166	87	9	fig.12	fig.12	NOUN
ajst-30166	87	10	shows	show	VERB
ajst-30166	87	11	the	the	DET
ajst-30166	87	12	cloud	cloud	ADJ
ajst-30166	87	13	diagram	diagram	NOUN
ajst-30166	87	14	of	of	ADP
ajst-30166	87	15	the	the	DET
ajst-30166	87	16	number	number	NOUN
ajst-30166	87	17	of	of	ADP
ajst-30166	87	18	fatigue	fatigue	NOUN
ajst-30166	87	19	cycles	cycle	NOUN
ajst-30166	87	20	of	of	ADP
ajst-30166	87	21	double	double	ADJ
ajst-30166	87	22	shoulder	shoulder	NOUN
ajst-30166	87	23	structure	structure	NOUN
ajst-30166	87	24	threads	thread	NOUN
ajst-30166	87	25	under	under	ADP
ajst-30166	87	26	40kn·m	40kn·m	NUM
ajst-30166	87	27	,	,	PUNCT
ajst-30166	87	28	50kn·m	50kn·m	NUM
ajst-30166	87	29	and	and	CCONJ
ajst-30166	87	30	60kn·m	60kn·m	NUM
ajst-30166	87	31	torsional	torsional	ADJ
ajst-30166	87	32	loads	load	NOUN
ajst-30166	87	33	.	.	PUNCT
ajst-30166	88	1	although	although	SCONJ
ajst-30166	88	2	the	the	DET
ajst-30166	88	3	maximum	maximum	ADJ
ajst-30166	88	4	stress	stress	NOUN
ajst-30166	88	5	of	of	ADP
ajst-30166	88	6	the	the	DET
ajst-30166	88	7	female	female	ADJ
ajst-30166	88	8	buckle	buckle	NOUN
ajst-30166	88	9	is	be	AUX
ajst-30166	88	10	greater	great	ADJ
ajst-30166	88	11	than	than	ADP
ajst-30166	88	12	the	the	DET
ajst-30166	88	13	maximum	maximum	ADJ
ajst-30166	88	14	stress	stress	NOUN
ajst-30166	88	15	of	of	ADP
ajst-30166	88	16	the	the	DET
ajst-30166	88	17	male	male	ADJ
ajst-30166	88	18	buckle	buckle	NOUN
ajst-30166	88	19	,	,	PUNCT
ajst-30166	88	20	the	the	DET
ajst-30166	88	21	three	three	NUM
ajst-30166	88	22	results	result	NOUN
ajst-30166	88	23	are	be	AUX
ajst-30166	88	24	all	all	PRON
ajst-30166	88	25	male	male	ADJ
ajst-30166	88	26	buckle	buckle	NOUN
ajst-30166	88	27	fatigue	fatigue	NOUN
ajst-30166	88	28	life	life	NOUN
ajst-30166	88	29	is	be	AUX
ajst-30166	88	30	less	less	ADJ
ajst-30166	88	31	than	than	ADP
ajst-30166	88	32	the	the	DET
ajst-30166	88	33	fatigue	fatigue	NOUN
ajst-30166	88	34	life	life	NOUN
ajst-30166	88	35	of	of	ADP
ajst-30166	88	36	the	the	DET
ajst-30166	88	37	female	female	ADJ
ajst-30166	88	38	buckle	buckle	NOUN
ajst-30166	88	39	,	,	PUNCT
ajst-30166	88	40	indicating	indicate	VERB
ajst-30166	88	41	that	that	SCONJ
ajst-30166	88	42	the	the	DET
ajst-30166	88	43	high	high	ADJ
ajst-30166	88	44	stress	stress	NOUN
ajst-30166	88	45	level	level	NOUN
ajst-30166	88	46	of	of	ADP
ajst-30166	88	47	the	the	DET
ajst-30166	88	48	male	male	ADJ
ajst-30166	88	49	buckle	buckle	NOUN
ajst-30166	88	50	has	have	VERB
ajst-30166	88	51	a	a	DET
ajst-30166	88	52	wider	wide	ADJ
ajst-30166	88	53	range	range	NOUN
ajst-30166	88	54	,	,	PUNCT
ajst-30166	88	55	resulting	result	VERB
ajst-30166	88	56	in	in	ADP
ajst-30166	88	57	a	a	DET
ajst-30166	88	58	lower	low	ADJ
ajst-30166	88	59	number	number	NOUN
ajst-30166	88	60	of	of	ADP
ajst-30166	88	61	fatigue	fatigue	NOUN
ajst-30166	88	62	cycles	cycle	NOUN
ajst-30166	88	63	of	of	ADP
ajst-30166	88	64	the	the	DET
ajst-30166	88	65	male	male	ADJ
ajst-30166	88	66	buckle	buckle	NOUN
ajst-30166	88	67	,	,	PUNCT
ajst-30166	88	68	and	and	CCONJ
ajst-30166	88	69	they	they	PRON
ajst-30166	88	70	all	all	PRON
ajst-30166	88	71	appeared	appear	VERB
ajst-30166	88	72	in	in	ADP
ajst-30166	88	73	the	the	DET
ajst-30166	88	74	first	first	ADJ
ajst-30166	88	75	ring	ring	NOUN
ajst-30166	88	76	of	of	ADP
ajst-30166	88	77	the	the	DET
ajst-30166	88	78	male	male	ADJ
ajst-30166	88	79	buckle	buckle	NOUN
ajst-30166	88	80	,	,	PUNCT
ajst-30166	88	81	which	which	PRON
ajst-30166	88	82	is	be	AUX
ajst-30166	88	83	in	in	ADP
ajst-30166	88	84	line	line	NOUN
ajst-30166	88	85	with	with	ADP
ajst-30166	88	86	the	the	DET
ajst-30166	88	87	phenomenon	phenomenon	NOUN
ajst-30166	88	88	of	of	ADP
ajst-30166	88	89	fatigue	fatigue	NOUN
ajst-30166	88	90	fracture	fracture	NOUN
ajst-30166	88	91	that	that	PRON
ajst-30166	88	92	is	be	AUX
ajst-30166	88	93	prone	prone	ADJ
ajst-30166	88	94	to	to	PART
ajst-30166	88	95	occur	occur	VERB
ajst-30166	88	96	in	in	ADP
ajst-30166	88	97	the	the	DET
ajst-30166	88	98	first	first	ADJ
ajst-30166	88	99	ring	ring	NOUN
ajst-30166	88	100	of	of	ADP
ajst-30166	88	101	the	the	DET
ajst-30166	88	102	male	male	ADJ
ajst-30166	88	103	buckle	buckle	NOUN
ajst-30166	88	104	in	in	ADP
ajst-30166	88	105	the	the	DET
ajst-30166	88	106	engineering	engineering	NOUN
ajst-30166	88	107	position	position	NOUN
ajst-30166	88	108	.	.	PUNCT
ajst-30166	89	1	15	15	NUM
ajst-30166	89	2	figure	figure	NOUN
ajst-30166	89	3	13	13	NUM
ajst-30166	89	4	.	.	PUNCT
ajst-30166	90	1	fatigue	fatigue	NOUN
ajst-30166	90	2	life	life	NOUN
ajst-30166	90	3	curve	curve	NOUN
ajst-30166	90	4	under	under	ADP
ajst-30166	90	5	double	double	ADJ
ajst-30166	90	6	shoulder	shoulder	NOUN
ajst-30166	90	7	thread	thread	NOUN
ajst-30166	90	8	torque	torque	NOUN
ajst-30166	90	9	fig.13	fig.13	PROPN
ajst-30166	90	10	shows	show	VERB
ajst-30166	90	11	the	the	DET
ajst-30166	90	12	fatigue	fatigue	NOUN
ajst-30166	90	13	life	life	NOUN
ajst-30166	90	14	of	of	ADP
ajst-30166	90	15	double	double	ADJ
ajst-30166	90	16	shoulder	shoulder	NOUN
ajst-30166	90	17	joints	joint	NOUN
ajst-30166	90	18	in	in	ADP
ajst-30166	90	19	relation	relation	NOUN
ajst-30166	90	20	to	to	ADP
ajst-30166	90	21	the	the	DET
ajst-30166	90	22	torque	torque	NOUN
ajst-30166	90	23	load	load	NOUN
ajst-30166	90	24	curve	curve	NOUN
ajst-30166	90	25	.	.	PUNCT
ajst-30166	91	1	with	with	ADP
ajst-30166	91	2	the	the	DET
ajst-30166	91	3	increase	increase	NOUN
ajst-30166	91	4	of	of	ADP
ajst-30166	91	5	torque	torque	NOUN
ajst-30166	91	6	,	,	PUNCT
ajst-30166	91	7	double	double	ADJ
ajst-30166	91	8	shoulder	shoulder	NOUN
ajst-30166	91	9	joint	joint	ADJ
ajst-30166	91	10	male	male	ADJ
ajst-30166	91	11	buckle	buckle	NOUN
ajst-30166	91	12	female	female	ADJ
ajst-30166	91	13	buckle	buckle	NOUN
ajst-30166	91	14	fatigue	fatigue	NOUN
ajst-30166	91	15	cycle	cycle	NOUN
ajst-30166	91	16	number	number	NOUN
ajst-30166	91	17	decreases	decrease	VERB
ajst-30166	91	18	from	from	ADP
ajst-30166	91	19	high	high	ADJ
ajst-30166	91	20	week	week	NOUN
ajst-30166	91	21	fatigue	fatigue	NOUN
ajst-30166	91	22	106	106	NUM
ajst-30166	91	23	magnitude	magnitude	NOUN
ajst-30166	91	24	down	down	ADP
ajst-30166	91	25	to	to	ADP
ajst-30166	91	26	104	104	NUM
ajst-30166	91	27	.	.	PUNCT
ajst-30166	92	1	male	male	ADJ
ajst-30166	92	2	buckle	buckle	NOUN
ajst-30166	92	3	fatigue	fatigue	NOUN
ajst-30166	92	4	cycle	cycle	NOUN
ajst-30166	92	5	number	number	NOUN
ajst-30166	92	6	are	be	AUX
ajst-30166	92	7	smaller	small	ADJ
ajst-30166	92	8	than	than	ADP
ajst-30166	92	9	the	the	DET
ajst-30166	92	10	female	female	ADJ
ajst-30166	92	11	buckle	buckle	NOUN
ajst-30166	92	12	,	,	PUNCT
ajst-30166	92	13	indicating	indicate	VERB
ajst-30166	92	14	that	that	SCONJ
ajst-30166	92	15	the	the	DET
ajst-30166	92	16	male	male	ADJ
ajst-30166	92	17	buckle	buckle	NOUN
ajst-30166	92	18	is	be	AUX
ajst-30166	92	19	more	more	ADV
ajst-30166	92	20	prone	prone	ADJ
ajst-30166	92	21	to	to	ADP
ajst-30166	92	22	fatigue	fatigue	NOUN
ajst-30166	92	23	failure	failure	NOUN
ajst-30166	92	24	,	,	PUNCT
ajst-30166	92	25	but	but	CCONJ
ajst-30166	92	26	the	the	DET
ajst-30166	92	27	overall	overall	ADJ
ajst-30166	92	28	number	number	NOUN
ajst-30166	92	29	of	of	ADP
ajst-30166	92	30	fatigue	fatigue	NOUN
ajst-30166	92	31	cycles	cycle	NOUN
ajst-30166	92	32	is	be	AUX
ajst-30166	92	33	less	less	ADJ
ajst-30166	92	34	than	than	ADP
ajst-30166	92	35	the	the	DET
ajst-30166	92	36	api	api	NOUN
ajst-30166	92	37	structure	structure	NOUN
ajst-30166	92	38	,	,	PUNCT
ajst-30166	92	39	has	have	AUX
ajst-30166	92	40	a	a	DET
ajst-30166	92	41	better	well	ADJ
ajst-30166	92	42	fatigue	fatigue	NOUN
ajst-30166	92	43	resistance	resistance	NOUN
ajst-30166	92	44	.	.	PUNCT
ajst-30166	93	1	5	5	NUM
ajst-30166	93	2	.	.	X
ajst-30166	93	3	conclusions	conclusion	NOUN
ajst-30166	93	4	in	in	ADP
ajst-30166	93	5	this	this	DET
ajst-30166	93	6	paper	paper	NOUN
ajst-30166	93	7	,	,	PUNCT
ajst-30166	93	8	for	for	ADP
ajst-30166	93	9	deep	deep	ADJ
ajst-30166	93	10	and	and	CCONJ
ajst-30166	93	11	ultra	ultra	ADJ
ajst-30166	93	12	-	-	ADJ
ajst-30166	93	13	deep	deep	ADJ
ajst-30166	93	14	oil	oil	NOUN
ajst-30166	93	15	and	and	CCONJ
ajst-30166	93	16	gas	gas	NOUN
ajst-30166	93	17	drilling	drilling	NOUN
ajst-30166	93	18	,	,	PUNCT
ajst-30166	93	19	the	the	DET
ajst-30166	93	20	problem	problem	NOUN
ajst-30166	93	21	of	of	ADP
ajst-30166	93	22	excessive	excessive	ADJ
ajst-30166	93	23	torque	torque	NOUN
ajst-30166	93	24	and	and	CCONJ
ajst-30166	93	25	frequent	frequent	ADJ
ajst-30166	93	26	failure	failure	NOUN
ajst-30166	93	27	of	of	ADP
ajst-30166	93	28	the	the	DET
ajst-30166	93	29	drill	drill	NOUN
ajst-30166	93	30	column	column	NOUN
ajst-30166	93	31	,	,	PUNCT
ajst-30166	93	32	the	the	DET
ajst-30166	93	33	thread	thread	NOUN
ajst-30166	93	34	structure	structure	NOUN
ajst-30166	93	35	of	of	ADP
ajst-30166	93	36	double	double	ADJ
ajst-30166	93	37	shoulder	shoulder	NOUN
ajst-30166	93	38	drilling	drilling	NOUN
ajst-30166	93	39	tool	tool	NOUN
ajst-30166	93	40	with	with	ADP
ajst-30166	93	41	better	well	ADJ
ajst-30166	93	42	anti	anti	ADJ
ajst-30166	93	43	-	-	ADJ
ajst-30166	93	44	torsion	torsion	ADJ
ajst-30166	93	45	performance	performance	NOUN
ajst-30166	93	46	is	be	AUX
ajst-30166	93	47	mechanically	mechanically	ADV
ajst-30166	93	48	analyzed	analyze	VERB
ajst-30166	93	49	and	and	CCONJ
ajst-30166	93	50	life	life	NOUN
ajst-30166	93	51	calculation	calculation	NOUN
ajst-30166	93	52	,	,	PUNCT
ajst-30166	93	53	and	and	CCONJ
ajst-30166	93	54	the	the	DET
ajst-30166	93	55	following	follow	VERB
ajst-30166	93	56	conclusions	conclusion	NOUN
ajst-30166	93	57	are	be	AUX
ajst-30166	93	58	obtained	obtain	VERB
ajst-30166	93	59	:	:	PUNCT
ajst-30166	93	60	(	(	PUNCT
ajst-30166	93	61	1	1	X
ajst-30166	93	62	)	)	PUNCT
ajst-30166	93	63	analyze	analyze	VERB
ajst-30166	93	64	the	the	DET
ajst-30166	93	65	mechanical	mechanical	ADJ
ajst-30166	93	66	analysis	analysis	NOUN
ajst-30166	93	67	of	of	ADP
ajst-30166	93	68	joint	joint	ADJ
ajst-30166	93	69	thread	thread	NOUN
ajst-30166	93	70	torque	torque	NOUN
ajst-30166	93	71	load	load	NOUN
ajst-30166	93	72	,	,	PUNCT
ajst-30166	93	73	establish	establish	VERB
ajst-30166	93	74	a	a	DET
ajst-30166	93	75	finite	finite	ADJ
ajst-30166	93	76	element	element	NOUN
ajst-30166	93	77	model	model	NOUN
ajst-30166	93	78	for	for	ADP
ajst-30166	93	79	calculating	calculate	VERB
ajst-30166	93	80	the	the	DET
ajst-30166	93	81	thread	thread	NOUN
ajst-30166	93	82	strength	strength	NOUN
ajst-30166	93	83	of	of	ADP
ajst-30166	93	84	the	the	DET
ajst-30166	93	85	three	three	NUM
ajst-30166	93	86	-	-	PUNCT
ajst-30166	93	87	dimensional	dimensional	ADJ
ajst-30166	93	88	structure	structure	NOUN
ajst-30166	93	89	of	of	ADP
ajst-30166	93	90	doubleshoulder	doubleshoulder	ADJ
ajst-30166	93	91	thread	thread	NOUN
ajst-30166	93	92	,	,	PUNCT
ajst-30166	93	93	and	and	CCONJ
ajst-30166	93	94	compare	compare	VERB
ajst-30166	93	95	the	the	DET
ajst-30166	93	96	calculated	calculated	ADJ
ajst-30166	93	97	outer	outer	ADJ
ajst-30166	93	98	wall	wall	NOUN
ajst-30166	93	99	node	node	NOUN
ajst-30166	93	100	stress	stress	NOUN
ajst-30166	93	101	with	with	ADP
ajst-30166	93	102	that	that	PRON
ajst-30166	93	103	obtained	obtain	VERB
ajst-30166	93	104	from	from	ADP
ajst-30166	93	105	the	the	DET
ajst-30166	93	106	experimental	experimental	ADJ
ajst-30166	93	107	results	result	NOUN
ajst-30166	93	108	,	,	PUNCT
ajst-30166	93	109	which	which	PRON
ajst-30166	93	110	verifies	verify	VERB
ajst-30166	93	111	the	the	DET
ajst-30166	93	112	reasonableness	reasonableness	NOUN
ajst-30166	93	113	of	of	ADP
ajst-30166	93	114	the	the	DET
ajst-30166	93	115	simulation	simulation	NOUN
ajst-30166	93	116	model	model	NOUN
ajst-30166	93	117	.	.	PUNCT
ajst-30166	94	1	(	(	PUNCT
ajst-30166	94	2	2	2	X
ajst-30166	94	3	)	)	PUNCT
ajst-30166	94	4	comparative	comparative	ADJ
ajst-30166	94	5	analysis	analysis	NOUN
ajst-30166	94	6	of	of	ADP
ajst-30166	94	7	api	api	NOUN
ajst-30166	94	8	and	and	CCONJ
ajst-30166	94	9	double	double	ADJ
ajst-30166	94	10	-	-	PUNCT
ajst-30166	94	11	shoulder	shoulder	NOUN
ajst-30166	94	12	structure	structure	NOUN
ajst-30166	94	13	through	through	ADP
ajst-30166	94	14	torque	torque	NOUN
ajst-30166	94	15	load	load	NOUN
ajst-30166	94	16	calculation	calculation	NOUN
ajst-30166	94	17	,	,	PUNCT
ajst-30166	94	18	api	api	NOUN
ajst-30166	94	19	stress	stress	NOUN
ajst-30166	94	20	is	be	AUX
ajst-30166	94	21	mainly	mainly	ADV
ajst-30166	94	22	concentrated	concentrate	VERB
ajst-30166	94	23	in	in	ADP
ajst-30166	94	24	the	the	DET
ajst-30166	94	25	main	main	ADJ
ajst-30166	94	26	shoulder	shoulder	NOUN
ajst-30166	94	27	side	side	NOUN
ajst-30166	94	28	,	,	PUNCT
ajst-30166	94	29	and	and	CCONJ
ajst-30166	94	30	then	then	ADV
ajst-30166	94	31	decreases	decrease	VERB
ajst-30166	94	32	sequentially	sequentially	ADV
ajst-30166	94	33	,	,	PUNCT
ajst-30166	94	34	while	while	SCONJ
ajst-30166	94	35	the	the	DET
ajst-30166	94	36	stress	stress	NOUN
ajst-30166	94	37	of	of	ADP
ajst-30166	94	38	double	double	ADJ
ajst-30166	94	39	-	-	PUNCT
ajst-30166	94	40	shoulder	shoulder	NOUN
ajst-30166	94	41	structure	structure	NOUN
ajst-30166	94	42	becomes	become	VERB
ajst-30166	94	43	the	the	DET
ajst-30166	94	44	distribution	distribution	NOUN
ajst-30166	94	45	state	state	NOUN
ajst-30166	94	46	of	of	ADP
ajst-30166	94	47	threads	thread	NOUN
ajst-30166	94	48	with	with	ADP
ajst-30166	94	49	two	two	NUM
ajst-30166	94	50	large	large	ADJ
ajst-30166	94	51	ends	end	NOUN
ajst-30166	94	52	and	and	CCONJ
ajst-30166	94	53	a	a	DET
ajst-30166	94	54	small	small	ADJ
ajst-30166	94	55	middle	middle	NOUN
ajst-30166	94	56	,	,	PUNCT
ajst-30166	94	57	and	and	CCONJ
ajst-30166	94	58	the	the	DET
ajst-30166	94	59	thread	thread	NOUN
ajst-30166	94	60	stress	stress	NOUN
ajst-30166	94	61	is	be	AUX
ajst-30166	94	62	more	more	ADV
ajst-30166	94	63	balanced	balanced	ADJ
ajst-30166	94	64	,	,	PUNCT
ajst-30166	94	65	and	and	CCONJ
ajst-30166	94	66	the	the	DET
ajst-30166	94	67	torsional	torsional	ADJ
ajst-30166	94	68	performance	performance	NOUN
ajst-30166	94	69	of	of	ADP
ajst-30166	94	70	the	the	DET
ajst-30166	94	71	double	double	ADJ
ajst-30166	94	72	-	-	PUNCT
ajst-30166	94	73	shoulder	shoulder	NOUN
ajst-30166	94	74	structure	structure	NOUN
ajst-30166	94	75	is	be	AUX
ajst-30166	94	76	improved	improve	VERB
ajst-30166	94	77	by	by	ADP
ajst-30166	94	78	20.8	20.8	NUM
ajst-30166	94	79	%	%	NOUN
ajst-30166	94	80	compared	compare	VERB
ajst-30166	94	81	with	with	ADP
ajst-30166	94	82	that	that	PRON
ajst-30166	94	83	of	of	ADP
ajst-30166	94	84	api	api	NOUN
ajst-30166	94	85	threads	thread	NOUN
ajst-30166	94	86	.	.	PUNCT
ajst-30166	95	1	(	(	PUNCT
ajst-30166	95	2	3	3	X
ajst-30166	95	3	)	)	PUNCT
ajst-30166	95	4	through	through	ADP
ajst-30166	95	5	the	the	DET
ajst-30166	95	6	fatigue	fatigue	NOUN
ajst-30166	95	7	life	life	NOUN
ajst-30166	95	8	calculation	calculation	NOUN
ajst-30166	95	9	,	,	PUNCT
ajst-30166	95	10	api	api	NOUN
ajst-30166	95	11	and	and	CCONJ
ajst-30166	95	12	doubleshoulder	doubleshoulder	ADJ
ajst-30166	95	13	structure	structure	NOUN
ajst-30166	95	14	are	be	AUX
ajst-30166	95	15	compared	compare	VERB
ajst-30166	95	16	and	and	CCONJ
ajst-30166	95	17	analyzed	analyze	VERB
ajst-30166	95	18	,	,	PUNCT
ajst-30166	95	19	the	the	DET
ajst-30166	95	20	fatigue	fatigue	NOUN
ajst-30166	95	21	failure	failure	NOUN
ajst-30166	95	22	location	location	NOUN
ajst-30166	95	23	of	of	ADP
ajst-30166	95	24	api	api	NOUN
ajst-30166	95	25	structure	structure	NOUN
ajst-30166	95	26	is	be	AUX
ajst-30166	95	27	mainly	mainly	ADV
ajst-30166	95	28	located	locate	VERB
ajst-30166	95	29	in	in	ADP
ajst-30166	95	30	the	the	DET
ajst-30166	95	31	first	first	ADJ
ajst-30166	95	32	turn	turn	NOUN
ajst-30166	95	33	of	of	ADP
ajst-30166	95	34	the	the	DET
ajst-30166	95	35	thread	thread	NOUN
ajst-30166	95	36	,	,	PUNCT
ajst-30166	95	37	while	while	SCONJ
ajst-30166	95	38	the	the	DET
ajst-30166	95	39	fatigue	fatigue	NOUN
ajst-30166	95	40	failure	failure	NOUN
ajst-30166	95	41	location	location	NOUN
ajst-30166	95	42	of	of	ADP
ajst-30166	95	43	doubleshoulder	doubleshoulder	ADJ
ajst-30166	95	44	structure	structure	NOUN
ajst-30166	95	45	is	be	AUX
ajst-30166	95	46	at	at	ADP
ajst-30166	95	47	the	the	DET
ajst-30166	95	48	two	two	NUM
ajst-30166	95	49	ends	end	NOUN
ajst-30166	95	50	of	of	ADP
ajst-30166	95	51	the	the	DET
ajst-30166	95	52	thread	thread	NOUN
ajst-30166	95	53	,	,	PUNCT
ajst-30166	95	54	and	and	CCONJ
ajst-30166	95	55	the	the	DET
ajst-30166	95	56	double	double	ADJ
ajst-30166	95	57	-	-	PUNCT
ajst-30166	95	58	shoulder	shoulder	NOUN
ajst-30166	95	59	structure	structure	NOUN
ajst-30166	95	60	shows	show	VERB
ajst-30166	95	61	a	a	DET
ajst-30166	95	62	better	well	ADJ
ajst-30166	95	63	fatigue	fatigue	NOUN
ajst-30166	95	64	resistance	resistance	NOUN
ajst-30166	95	65	,	,	PUNCT
ajst-30166	95	66	and	and	CCONJ
ajst-30166	95	67	the	the	DET
ajst-30166	95	68	fatigue	fatigue	NOUN
ajst-30166	95	69	life	life	NOUN
ajst-30166	95	70	is	be	AUX
ajst-30166	95	71	improved	improve	VERB
ajst-30166	95	72	by	by	ADP
ajst-30166	95	73	about	about	ADV
ajst-30166	95	74	147	147	NUM
ajst-30166	95	75	%	%	NOUN
ajst-30166	95	76	compared	compare	VERB
ajst-30166	95	77	with	with	ADP
ajst-30166	95	78	api	api	NOUN
ajst-30166	95	79	thread	thread	NOUN
ajst-30166	95	80	.	.	PUNCT
ajst-30166	96	1	acknowledgement	acknowledgement	NOUN
ajst-30166	96	2	this	this	DET
ajst-30166	96	3	research	research	NOUN
ajst-30166	96	4	was	be	AUX
ajst-30166	96	5	supported	support	VERB
ajst-30166	96	6	in	in	ADP
ajst-30166	96	7	part	part	NOUN
ajst-30166	96	8	by	by	ADP
ajst-30166	96	9	the	the	DET
ajst-30166	96	10	key	key	ADJ
ajst-30166	96	11	core	core	NOUN
ajst-30166	96	12	technology	technology	NOUN
ajst-30166	96	13	research	research	NOUN
ajst-30166	96	14	and	and	CCONJ
ajst-30166	96	15	development	development	NOUN
ajst-30166	96	16	project	project	NOUN
ajst-30166	96	17	of	of	ADP
ajst-30166	96	18	china	china	PROPN
ajst-30166	96	19	national	national	PROPN
ajst-30166	96	20	petroleum	petroleum	PROPN
ajst-30166	96	21	corporation	corporation	NOUN
ajst-30166	96	22	,	,	PUNCT
ajst-30166	96	23	“	"	PUNCT
ajst-30166	96	24	research	research	NOUN
ajst-30166	96	25	and	and	CCONJ
ajst-30166	96	26	development	development	NOUN
ajst-30166	96	27	of	of	ADP
ajst-30166	96	28	high	high	ADJ
ajst-30166	96	29	power	power	NOUN
ajst-30166	96	30	downhole	downhole	NOUN
ajst-30166	96	31	electric	electric	ADJ
ajst-30166	96	32	heater	heater	NOUN
ajst-30166	96	33	”	"	PUNCT
ajst-30166	96	34	(	(	PUNCT
ajst-30166	96	35	project	project	VERB
ajst-30166	96	36	no	no	NOUN
ajst-30166	96	37	.	.	PUNCT
ajst-30166	96	38	2024zg23	2024zg23	NUM
ajst-30166	96	39	)	)	PUNCT
ajst-30166	96	40	.	.	PUNCT
ajst-30166	97	1	references	reference	NOUN
ajst-30166	97	2	[	[	X
ajst-30166	97	3	1	1	NUM
ajst-30166	97	4	]	]	PUNCT
ajst-30166	97	5	ozguc	ozguc	NOUN
ajst-30166	97	6	,	,	PUNCT
ajst-30166	97	7	o.	o.	INTJ
ajst-30166	97	8	(	(	PUNCT
ajst-30166	97	9	2021	2021	NUM
ajst-30166	97	10	)	)	PUNCT
ajst-30166	97	11	.	.	PUNCT
ajst-30166	98	1	analysis	analysis	NOUN
ajst-30166	98	2	of	of	ADP
ajst-30166	98	3	fatigue	fatigue	NOUN
ajst-30166	98	4	behaviour	behaviour	NOUN
ajst-30166	98	5	of	of	ADP
ajst-30166	98	6	drill	drill	NOUN
ajst-30166	98	7	pipe	pipe	NOUN
ajst-30166	98	8	on	on	ADP
ajst-30166	98	9	pin	pin	PROPN
ajst-30166	98	10	-	-	PUNCT
ajst-30166	98	11	box	box	NOUN
ajst-30166	98	12	connection	connection	NOUN
ajst-30166	98	13	.	.	PUNCT
ajst-30166	99	1	proceedings	proceeding	NOUN
ajst-30166	99	2	of	of	ADP
ajst-30166	99	3	the	the	DET
ajst-30166	99	4	institution	institution	NOUN
ajst-30166	99	5	of	of	ADP
ajst-30166	99	6	mechanical	mechanical	ADJ
ajst-30166	99	7	engineers	engineer	NOUN
ajst-30166	99	8	,	,	PUNCT
ajst-30166	99	9	part	part	NOUN
ajst-30166	99	10	m	m	NOUN
ajst-30166	99	11	:	:	PUNCT
ajst-30166	99	12	journal	journal	NOUN
ajst-30166	99	13	of	of	ADP
ajst-30166	99	14	engineering	engineering	NOUN
ajst-30166	99	15	for	for	ADP
ajst-30166	99	16	the	the	DET
ajst-30166	99	17	maritime	maritime	ADJ
ajst-30166	99	18	environment	environment	NOUN
ajst-30166	99	19	,	,	PUNCT
ajst-30166	99	20	235(1	235(1	NUM
ajst-30166	99	21	)	)	PUNCT
ajst-30166	99	22	,	,	PUNCT
ajst-30166	99	23	68	68	NUM
ajst-30166	99	24	-	-	SYM
ajst-30166	99	25	80	80	NUM
ajst-30166	99	26	.	.	PUNCT
ajst-30166	100	1	[	[	X
ajst-30166	100	2	2	2	NUM
ajst-30166	100	3	]	]	SYM
ajst-30166	100	4	tamala	tamala	PROPN
ajst-30166	100	5	,	,	PUNCT
ajst-30166	100	6	j.	j.	PROPN
ajst-30166	100	7	k.	k.	PROPN
ajst-30166	100	8	,	,	PUNCT
ajst-30166	100	9	maramag	maramag	PROPN
ajst-30166	100	10	,	,	PUNCT
ajst-30166	100	11	e.	e.	PROPN
ajst-30166	100	12	i.	i.	PROPN
ajst-30166	100	13	,	,	PUNCT
ajst-30166	100	14	simeon	simeon	PROPN
ajst-30166	100	15	,	,	PUNCT
ajst-30166	100	16	k.	k.	PROPN
ajst-30166	100	17	a.	a.	PROPN
ajst-30166	100	18	,	,	PUNCT
ajst-30166	100	19	&	&	CCONJ
ajst-30166	100	20	ignacio	ignacio	PROPN
ajst-30166	100	21	,	,	PUNCT
ajst-30166	100	22	j.	j.	PROPN
ajst-30166	100	23	j.	j.	PROPN
ajst-30166	100	24	(	(	PUNCT
ajst-30166	100	25	2022	2022	NUM
ajst-30166	100	26	)	)	PUNCT
ajst-30166	100	27	.	.	PUNCT
ajst-30166	101	1	a	a	DET
ajst-30166	101	2	bibliometric	bibliometric	ADJ
ajst-30166	101	3	analysis	analysis	NOUN
ajst-30166	101	4	of	of	ADP
ajst-30166	101	5	sustainable	sustainable	ADJ
ajst-30166	101	6	oil	oil	NOUN
ajst-30166	101	7	and	and	CCONJ
ajst-30166	101	8	gas	gas	NOUN
ajst-30166	101	9	production	production	NOUN
ajst-30166	101	10	research	research	NOUN
ajst-30166	101	11	using	use	VERB
ajst-30166	101	12	vosviewer	vosviewer	NOUN
ajst-30166	101	13	.	.	PUNCT
ajst-30166	102	1	cleaner	clean	ADJ
ajst-30166	102	2	engineering	engineering	NOUN
ajst-30166	102	3	and	and	CCONJ
ajst-30166	102	4	technology	technology	NOUN
ajst-30166	102	5	,	,	PUNCT
ajst-30166	102	6	7	7	NUM
ajst-30166	102	7	,	,	PUNCT
ajst-30166	102	8	100437	100437	NUM
ajst-30166	102	9	.	.	PUNCT
ajst-30166	103	1	[	[	X
ajst-30166	103	2	3	3	NUM
ajst-30166	103	3	]	]	X
ajst-30166	103	4	ma	ma	PROPN
ajst-30166	103	5	,	,	PUNCT
ajst-30166	103	6	y.	y.	PROPN
ajst-30166	103	7	,	,	PUNCT
ajst-30166	103	8	zhang	zhang	PROPN
ajst-30166	103	9	,	,	PUNCT
ajst-30166	103	10	j.	j.	PROPN
ajst-30166	103	11	w.	w.	PROPN
ajst-30166	103	12	,	,	PUNCT
ajst-30166	103	13	fan	fan	PROPN
ajst-30166	103	14	,	,	PUNCT
ajst-30166	103	15	y.	y.	PROPN
ajst-30166	103	16	,	,	PUNCT
ajst-30166	103	17	et	et	PROPN
ajst-30166	103	18	al	al	PROPN
ajst-30166	103	19	.	.	PUNCT
ajst-30166	104	1	(	(	PUNCT
ajst-30166	104	2	2024	2024	NUM
ajst-30166	104	3	)	)	PUNCT
ajst-30166	104	4	.	.	PUNCT
ajst-30166	105	1	failure	failure	NOUN
ajst-30166	105	2	analysis	analysis	NOUN
ajst-30166	105	3	and	and	CCONJ
ajst-30166	105	4	prevention	prevention	NOUN
ajst-30166	105	5	strategies	strategy	NOUN
ajst-30166	105	6	for	for	ADP
ajst-30166	105	7	fatigue	fatigue	NOUN
ajst-30166	105	8	in	in	ADP
ajst-30166	105	9	large	large	ADJ
ajst-30166	105	10	-	-	PUNCT
ajst-30166	105	11	diameter	diameter	NOUN
ajst-30166	105	12	wellbore	wellbore	NOUN
ajst-30166	105	13	drilling	drilling	NOUN
ajst-30166	105	14	tools	tool	NOUN
ajst-30166	105	15	used	use	VERB
ajst-30166	105	16	in	in	ADP
ajst-30166	105	17	deep	deep	ADJ
ajst-30166	105	18	and	and	CCONJ
ajst-30166	105	19	ultra	ultra	ADJ
ajst-30166	105	20	-	-	ADJ
ajst-30166	105	21	deep	deep	ADJ
ajst-30166	105	22	wells	well	NOUN
ajst-30166	105	23	.	.	PUNCT
ajst-30166	106	1	natural	natural	ADJ
ajst-30166	106	2	gas	gas	NOUN
ajst-30166	106	3	industry	industry	NOUN
ajst-30166	106	4	,	,	PUNCT
ajst-30166	106	5	44(6	44(6	NOUN
ajst-30166	106	6	)	)	PUNCT
ajst-30166	106	7	.	.	PUNCT
ajst-30166	107	1	[	[	X
ajst-30166	107	2	4	4	NUM
ajst-30166	107	3	]	]	SYM
ajst-30166	107	4	li	li	PROPN
ajst-30166	107	5	,	,	PUNCT
ajst-30166	107	6	h.	h.	PROPN
ajst-30166	107	7	l.	l.	PROPN
ajst-30166	107	8	,	,	PUNCT
ajst-30166	107	9	li	li	PROPN
ajst-30166	107	10	,	,	PUNCT
ajst-30166	107	11	p.	p.	PROPN
ajst-30166	107	12	q.	q.	PROPN
ajst-30166	107	13	,	,	PUNCT
ajst-30166	107	14	&	&	CCONJ
ajst-30166	107	15	feng	feng	PROPN
ajst-30166	107	16	,	,	PUNCT
ajst-30166	107	17	y.	y.	PROPN
ajst-30166	107	18	r.	r.	PROPN
ajst-30166	107	19	(	(	PUNCT
ajst-30166	107	20	1999	1999	NUM
ajst-30166	107	21	)	)	PUNCT
ajst-30166	107	22	.	.	PUNCT
ajst-30166	108	1	failure	failure	NOUN
ajst-30166	108	2	analysis	analysis	NOUN
ajst-30166	108	3	and	and	CCONJ
ajst-30166	108	4	prevention	prevention	NOUN
ajst-30166	108	5	of	of	ADP
ajst-30166	108	6	oil	oil	NOUN
ajst-30166	108	7	drill	drill	NOUN
ajst-30166	108	8	string	string	NOUN
ajst-30166	108	9	.	.	PUNCT
ajst-30166	109	1	petroleum	petroleum	NOUN
ajst-30166	109	2	industry	industry	NOUN
ajst-30166	109	3	press	press	NOUN
ajst-30166	109	4	.	.	PUNCT
ajst-30166	110	1	[	[	X
ajst-30166	110	2	5	5	NUM
ajst-30166	110	3	]	]	PUNCT
ajst-30166	110	4	tan	tan	PROPN
ajst-30166	110	5	,	,	PUNCT
ajst-30166	110	6	l.	l.	PROPN
ajst-30166	110	7	c.	c.	PROPN
ajst-30166	110	8	,	,	PUNCT
ajst-30166	110	9	li	li	PROPN
ajst-30166	110	10	,	,	PUNCT
ajst-30166	110	11	h.	h.	PROPN
ajst-30166	110	12	x.	x.	PROPN
ajst-30166	110	13	,	,	PUNCT
ajst-30166	110	14	zhou	zhou	PROPN
ajst-30166	110	15	,	,	PUNCT
ajst-30166	110	16	x.	x.	NOUN
ajst-30166	110	17	m.	m.	NOUN
ajst-30166	110	18	,	,	PUNCT
ajst-30166	110	19	&	&	CCONJ
ajst-30166	110	20	liu	liu	PROPN
ajst-30166	110	21	,	,	PUNCT
ajst-30166	110	22	m.	m.	NOUN
ajst-30166	110	23	(	(	PUNCT
ajst-30166	110	24	2022	2022	NUM
ajst-30166	110	25	)	)	PUNCT
ajst-30166	110	26	.	.	PUNCT
ajst-30166	111	1	failure	failure	NOUN
ajst-30166	111	2	analysis	analysis	NOUN
ajst-30166	111	3	of	of	ADP
ajst-30166	111	4	external	external	ADJ
ajst-30166	111	5	thread	thread	NOUN
ajst-30166	111	6	fracture	fracture	NOUN
ajst-30166	111	7	of	of	ADP
ajst-30166	111	8	drill	drill	NOUN
ajst-30166	111	9	collar	collar	NOUN
ajst-30166	111	10	in	in	ADP
ajst-30166	111	11	a	a	DET
ajst-30166	111	12	super	super	ADV
ajst-30166	111	13	deep	deep	ADJ
ajst-30166	111	14	well	well	ADV
ajst-30166	111	15	in	in	ADP
ajst-30166	111	16	sichuan	sichuan	PROPN
ajst-30166	111	17	chongqing	chongqing	PROPN
ajst-30166	111	18	area	area	NOUN
ajst-30166	111	19	.	.	PUNCT
ajst-30166	112	1	welded	weld	VERB
ajst-30166	112	2	pipe	pipe	NOUN
ajst-30166	112	3	and	and	CCONJ
ajst-30166	112	4	tube	tube	NOUN
ajst-30166	112	5	,	,	PUNCT
ajst-30166	112	6	45(11	45(11	NUM
ajst-30166	112	7	)	)	PUNCT
ajst-30166	112	8	,	,	PUNCT
ajst-30166	112	9	39	39	NUM
ajst-30166	112	10	46	46	NUM
ajst-30166	112	11	.	.	PUNCT
ajst-30166	113	1	[	[	X
ajst-30166	113	2	6	6	NUM
ajst-30166	113	3	]	]	SYM
ajst-30166	113	4	li	li	PROPN
ajst-30166	113	5	,	,	PUNCT
ajst-30166	113	6	fangpo	fangpo	NOUN
ajst-30166	113	7	,	,	PUNCT
ajst-30166	113	8	and	and	CCONJ
ajst-30166	113	9	,	,	PUNCT
ajst-30166	113	10	liu	liu	PROPN
ajst-30166	113	11	,	,	PUNCT
ajst-30166	113	12	yonggang	yonggang	PROPN
ajst-30166	113	13	,	,	PUNCT
ajst-30166	113	14	&	&	CCONJ
ajst-30166	113	15	and	and	CCONJ
ajst-30166	113	16	,	,	PUNCT
ajst-30166	113	17	et	et	PROPN
ajst-30166	113	18	al	al	PROPN
ajst-30166	113	19	.	.	PUNCT
ajst-30166	113	20	(	(	PUNCT
ajst-30166	113	21	2011	2011	NUM
ajst-30166	113	22	)	)	PUNCT
ajst-30166	113	23	.	.	PUNCT
ajst-30166	114	1	failure	failure	NOUN
ajst-30166	114	2	analysis	analysis	NOUN
ajst-30166	114	3	of	of	ADP
ajst-30166	114	4	127	127	NUM
ajst-30166	114	5	mm	mm	NUM
ajst-30166	114	6	ieu	ieu	PROPN
ajst-30166	114	7	g105	g105	PROPN
ajst-30166	114	8	drill	drill	NOUN
ajst-30166	114	9	pipe	pipe	NOUN
ajst-30166	114	10	wash	wash	VERB
ajst-30166	114	11	out	out	ADP
ajst-30166	114	12	.	.	PUNCT
ajst-30166	115	1	engineering	engineering	NOUN
ajst-30166	115	2	failure	failure	NOUN
ajst-30166	115	3	analysis	analysis	NOUN
ajst-30166	115	4	,	,	PUNCT
ajst-30166	115	5	18(7	18(7	NUM
ajst-30166	115	6	)	)	PUNCT
ajst-30166	115	7	,	,	PUNCT
ajst-30166	115	8	1867	1867	NUM
ajst-30166	115	9	-	-	SYM
ajst-30166	115	10	1872	1872	NUM
ajst-30166	115	11	.	.	PUNCT
ajst-30166	116	1	[	[	X
ajst-30166	116	2	7	7	NUM
ajst-30166	116	3	]	]	X
ajst-30166	116	4	zamani	zamani	PROPN
ajst-30166	116	5	,	,	PUNCT
ajst-30166	116	6	s.	s.	PROPN
ajst-30166	116	7	m.	m.	PROPN
ajst-30166	116	8	,	,	PUNCT
ajst-30166	116	9	hassanzadeh	hassanzadeh	NOUN
ajst-30166	116	10	-	-	PUNCT
ajst-30166	116	11	tabrizi	tabrizi	NOUN
ajst-30166	116	12	,	,	PUNCT
ajst-30166	116	13	s.	s.	PROPN
ajst-30166	116	14	a.	a.	PROPN
ajst-30166	116	15	,	,	PUNCT
ajst-30166	116	16	&	&	CCONJ
ajst-30166	116	17	sharifi	sharifi	PROPN
ajst-30166	116	18	,	,	PUNCT
ajst-30166	116	19	h.	h.	PROPN
ajst-30166	116	20	(	(	PUNCT
ajst-30166	116	21	2016	2016	NUM
ajst-30166	116	22	)	)	PUNCT
ajst-30166	116	23	.	.	PUNCT
ajst-30166	117	1	failure	failure	NOUN
ajst-30166	117	2	analysis	analysis	NOUN
ajst-30166	117	3	of	of	ADP
ajst-30166	117	4	drill	drill	NOUN
ajst-30166	117	5	pipe	pipe	NOUN
ajst-30166	117	6	:	:	PUNCT
ajst-30166	117	7	a	a	DET
ajst-30166	117	8	review	review	NOUN
ajst-30166	117	9	.	.	PUNCT
ajst-30166	118	1	engineering	engineering	NOUN
ajst-30166	118	2	failure	failure	NOUN
ajst-30166	118	3	analysis	analysis	NOUN
ajst-30166	118	4	,	,	PUNCT
ajst-30166	118	5	59	59	NUM
ajst-30166	118	6	,	,	PUNCT
ajst-30166	118	7	605	605	NUM
ajst-30166	118	8	-	-	SYM
ajst-30166	118	9	623	623	NUM
ajst-30166	118	10	.	.	PUNCT
ajst-30166	119	1	[	[	X
ajst-30166	119	2	8	8	NUM
ajst-30166	119	3	]	]	X
ajst-30166	119	4	liu	liu	PROPN
ajst-30166	119	5	,	,	PUNCT
ajst-30166	119	6	y.	y.	PROPN
ajst-30166	119	7	,	,	PUNCT
ajst-30166	119	8	lian	lian	PROPN
ajst-30166	119	9	,	,	PUNCT
ajst-30166	119	10	z.	z.	PROPN
ajst-30166	119	11	,	,	PUNCT
ajst-30166	119	12	lin	lin	PROPN
ajst-30166	119	13	,	,	PUNCT
ajst-30166	119	14	t.	t.	PROPN
ajst-30166	119	15	,	,	PUNCT
ajst-30166	119	16	shen	shen	PROPN
ajst-30166	119	17	,	,	PUNCT
ajst-30166	119	18	y.	y.	PROPN
ajst-30166	119	19	,	,	PUNCT
ajst-30166	119	20	&	&	CCONJ
ajst-30166	119	21	zhang	zhang	PROPN
ajst-30166	119	22	,	,	PUNCT
ajst-30166	119	23	q.	q.	PROPN
ajst-30166	119	24	(	(	PUNCT
ajst-30166	119	25	2016	2016	NUM
ajst-30166	119	26	)	)	PUNCT
ajst-30166	119	27	.	.	PUNCT
ajst-30166	120	1	a	a	DET
ajst-30166	120	2	study	study	NOUN
ajst-30166	120	3	on	on	ADP
ajst-30166	120	4	axial	axial	ADJ
ajst-30166	120	5	cracking	cracking	NOUN
ajst-30166	120	6	failure	failure	NOUN
ajst-30166	120	7	of	of	ADP
ajst-30166	120	8	drill	drill	NOUN
ajst-30166	120	9	pipe	pipe	NOUN
ajst-30166	120	10	body	body	NOUN
ajst-30166	120	11	.	.	PUNCT
ajst-30166	121	1	engineering	engineering	NOUN
ajst-30166	121	2	failure	failure	NOUN
ajst-30166	121	3	analysis	analysis	NOUN
ajst-30166	121	4	,	,	PUNCT
ajst-30166	121	5	59	59	NUM
ajst-30166	121	6	,	,	PUNCT
ajst-30166	121	7	434	434	NUM
ajst-30166	121	8	-	-	SYM
ajst-30166	121	9	443	443	NUM
ajst-30166	121	10	.	.	PUNCT
ajst-30166	122	1	[	[	X
ajst-30166	122	2	9	9	NUM
ajst-30166	122	3	]	]	X
ajst-30166	122	4	wang	wang	PROPN
ajst-30166	122	5	,	,	PUNCT
ajst-30166	122	6	x.	x.	PROPN
ajst-30166	122	7	,	,	PUNCT
ajst-30166	122	8	li	li	PROPN
ajst-30166	122	9	,	,	PUNCT
ajst-30166	122	10	f.	f.	PROPN
ajst-30166	122	11	,	,	PUNCT
ajst-30166	122	12	liu	liu	PROPN
ajst-30166	122	13	,	,	PUNCT
ajst-30166	122	14	y.	y.	PROPN
ajst-30166	122	15	,	,	PUNCT
ajst-30166	122	16	feng	feng	PROPN
ajst-30166	122	17	,	,	PUNCT
ajst-30166	122	18	y.	y.	PROPN
ajst-30166	122	19	,	,	PUNCT
ajst-30166	122	20	&	&	CCONJ
ajst-30166	122	21	zhu	zhu	PROPN
ajst-30166	122	22	,	,	PUNCT
ajst-30166	122	23	l.	l.	PROPN
ajst-30166	122	24	(	(	PUNCT
ajst-30166	122	25	2017	2017	NUM
ajst-30166	122	26	)	)	PUNCT
ajst-30166	122	27	.	.	PUNCT
ajst-30166	123	1	a	a	DET
ajst-30166	123	2	comprehensive	comprehensive	ADJ
ajst-30166	123	3	analysis	analysis	NOUN
ajst-30166	123	4	on	on	ADP
ajst-30166	123	5	the	the	DET
ajst-30166	123	6	longitudinal	longitudinal	ADJ
ajst-30166	123	7	fracture	fracture	NOUN
ajst-30166	123	8	in	in	ADP
ajst-30166	123	9	the	the	DET
ajst-30166	123	10	tool	tool	NOUN
ajst-30166	123	11	joints	joint	NOUN
ajst-30166	123	12	of	of	ADP
ajst-30166	123	13	drill	drill	NOUN
ajst-30166	123	14	pipes	pipe	NOUN
ajst-30166	123	15	.	.	PUNCT
ajst-30166	124	1	engineering	engineering	NOUN
ajst-30166	124	2	failure	failure	NOUN
ajst-30166	124	3	analysis	analysis	NOUN
ajst-30166	124	4	,	,	PUNCT
ajst-30166	124	5	79	79	NUM
ajst-30166	124	6	,	,	PUNCT
ajst-30166	124	7	1	1	NUM
ajst-30166	124	8	-	-	SYM
ajst-30166	124	9	7	7	NUM
ajst-30166	124	10	.	.	PUNCT
ajst-30166	125	1	[	[	X
ajst-30166	125	2	10	10	NUM
ajst-30166	125	3	]	]	SYM
ajst-30166	125	4	hu	hu	PROPN
ajst-30166	125	5	,	,	PUNCT
ajst-30166	125	6	x.	x.	PROPN
ajst-30166	125	7	b.	b.	PROPN
ajst-30166	125	8	(	(	PUNCT
ajst-30166	125	9	2021	2021	NUM
ajst-30166	125	10	)	)	PUNCT
ajst-30166	125	11	.	.	PUNCT
ajst-30166	126	1	application	application	NOUN
ajst-30166	126	2	status	status	NOUN
ajst-30166	126	3	and	and	CCONJ
ajst-30166	126	4	interchangeable	interchangeable	ADJ
ajst-30166	126	5	use	use	NOUN
ajst-30166	126	6	analysis	analysis	NOUN
ajst-30166	126	7	of	of	ADP
ajst-30166	126	8	double	double	ADJ
ajst-30166	126	9	shoulder	shoulder	NOUN
ajst-30166	126	10	drill	drill	NOUN
ajst-30166	126	11	pipe	pipe	NOUN
ajst-30166	126	12	threads	thread	NOUN
ajst-30166	126	13	.	.	PUNCT
ajst-30166	127	1	welded	weld	VERB
ajst-30166	127	2	pipe	pipe	NOUN
ajst-30166	127	3	and	and	CCONJ
ajst-30166	127	4	tube	tube	NOUN
ajst-30166	127	5	,	,	PUNCT
ajst-30166	127	6	044(009	044(009	NUM
ajst-30166	127	7	)	)	PUNCT
ajst-30166	127	8	.	.	PUNCT
ajst-30166	128	1	[	[	X
ajst-30166	128	2	11	11	NUM
ajst-30166	128	3	]	]	X
ajst-30166	128	4	liu	liu	PROPN
ajst-30166	128	5	,	,	PUNCT
ajst-30166	128	6	y.	y.	PROPN
ajst-30166	128	7	(	(	PUNCT
ajst-30166	128	8	2023	2023	NUM
ajst-30166	128	9	)	)	PUNCT
ajst-30166	128	10	.	.	PUNCT
ajst-30166	129	1	study	study	NOUN
ajst-30166	129	2	on	on	ADP
ajst-30166	129	3	energy	energy	NOUN
ajst-30166	129	4	dissipation	dissipation	NOUN
ajst-30166	129	5	and	and	CCONJ
ajst-30166	129	6	make	make	VERB
ajst-30166	129	7	-	-	PUNCT
ajst-30166	129	8	up	up	ADP
ajst-30166	129	9	torque	torque	NOUN
ajst-30166	129	10	control	control	NOUN
ajst-30166	129	11	of	of	ADP
ajst-30166	129	12	special	special	ADJ
ajst-30166	129	13	threaded	thread	VERB
ajst-30166	129	14	joints	joint	NOUN
ajst-30166	129	15	under	under	ADP
ajst-30166	129	16	dynamic	dynamic	ADJ
ajst-30166	129	17	load	load	NOUN
ajst-30166	129	18	.	.	PUNCT
ajst-30166	130	1	xi'an	xi'an	PROPN
ajst-30166	130	2	shiyou	shiyou	PROPN
ajst-30166	130	3	university	university	PROPN
ajst-30166	130	4	.	.	PUNCT
ajst-30166	131	1	16	16	NUM
ajst-30166	132	1	[	[	X
ajst-30166	132	2	12	12	NUM
ajst-30166	132	3	]	]	X
ajst-30166	132	4	wang	wang	PROPN
ajst-30166	132	5	,	,	PUNCT
ajst-30166	132	6	l.	l.	PROPN
ajst-30166	132	7	,	,	PUNCT
ajst-30166	132	8	zhang	zhang	PROPN
ajst-30166	132	9	,	,	PUNCT
ajst-30166	132	10	r.	r.	PROPN
ajst-30166	132	11	,	,	PUNCT
ajst-30166	132	12	zou	zou	PROPN
ajst-30166	132	13	,	,	PUNCT
ajst-30166	132	14	j.	j.	PROPN
ajst-30166	132	15	x.	x.	PROPN
ajst-30166	132	16	,	,	PUNCT
ajst-30166	132	17	&	&	CCONJ
ajst-30166	132	18	zang	zang	PROPN
ajst-30166	132	19	,	,	PUNCT
ajst-30166	132	20	y.	y.	PROPN
ajst-30166	132	21	(	(	PUNCT
ajst-30166	132	22	2000	2000	NUM
ajst-30166	132	23	)	)	PUNCT
ajst-30166	132	24	.	.	PUNCT
ajst-30166	133	1	experimental	experimental	ADJ
ajst-30166	133	2	research	research	NOUN
ajst-30166	133	3	of	of	ADP
ajst-30166	133	4	stress	stress	NOUN
ajst-30166	133	5	field	field	NOUN
ajst-30166	133	6	distribution	distribution	NOUN
ajst-30166	133	7	on	on	ADP
ajst-30166	133	8	api	api	NOUN
ajst-30166	133	9	round	round	NOUN
ajst-30166	133	10	thread	thread	NOUN
ajst-30166	133	11	casing	casing	NOUN
ajst-30166	133	12	connection	connection	NOUN
ajst-30166	133	13	.	.	PUNCT
ajst-30166	134	1	chinese	chinese	ADJ
ajst-30166	134	2	journal	journal	PROPN
ajst-30166	134	3	of	of	ADP
ajst-30166	134	4	engineering	engineering	PROPN
ajst-30166	134	5	,	,	PUNCT
ajst-30166	134	6	22(6	22(6	NUM
ajst-30166	134	7	)	)	PUNCT
ajst-30166	134	8	,	,	PUNCT
ajst-30166	134	9	555	555	NUM
ajst-30166	134	10	-	-	SYM
ajst-30166	134	11	558	558	NUM
ajst-30166	134	12	.	.	PUNCT
ajst-30166	135	1	[	[	X
ajst-30166	135	2	13	13	NUM
ajst-30166	135	3	]	]	X
ajst-30166	135	4	zhu	zhu	PROPN
ajst-30166	135	5	,	,	PUNCT
ajst-30166	135	6	x.	x.	PROPN
ajst-30166	135	7	h.	h.	PROPN
ajst-30166	135	8	(	(	PUNCT
ajst-30166	135	9	2016	2016	NUM
ajst-30166	135	10	)	)	PUNCT
ajst-30166	135	11	.	.	PUNCT
ajst-30166	136	1	failure	failure	NOUN
ajst-30166	136	2	analysis	analysis	NOUN
ajst-30166	136	3	and	and	CCONJ
ajst-30166	136	4	solution	solution	NOUN
ajst-30166	136	5	studies	study	NOUN
ajst-30166	136	6	on	on	ADP
ajst-30166	136	7	drill	drill	NOUN
ajst-30166	136	8	pipe	pipe	NOUN
ajst-30166	136	9	thread	thread	NOUN
ajst-30166	136	10	gluing	gluing	NOUN
ajst-30166	136	11	at	at	ADP
ajst-30166	136	12	the	the	DET
ajst-30166	136	13	exit	exit	NOUN
ajst-30166	136	14	side	side	NOUN
ajst-30166	136	15	of	of	ADP
ajst-30166	136	16	horizontal	horizontal	ADJ
ajst-30166	136	17	directional	directional	ADJ
ajst-30166	136	18	drilling	drilling	NOUN
ajst-30166	136	19	.	.	PUNCT
ajst-30166	137	1	in	in	ADP
ajst-30166	137	2	handbook	handbook	NOUN
ajst-30166	137	3	of	of	ADP
ajst-30166	137	4	materials	material	NOUN
ajst-30166	137	5	failure	failure	NOUN
ajst-30166	137	6	analysis	analysis	NOUN
ajst-30166	137	7	with	with	ADP
ajst-30166	137	8	case	case	NOUN
ajst-30166	137	9	studies	study	NOUN
ajst-30166	137	10	from	from	ADP
ajst-30166	137	11	the	the	DET
ajst-30166	137	12	oil	oil	NOUN
ajst-30166	137	13	and	and	CCONJ
ajst-30166	137	14	gas	gas	NOUN
ajst-30166	137	15	industry	industry	NOUN
ajst-30166	137	16	(	(	PUNCT
ajst-30166	137	17	pp	pp	ADJ
ajst-30166	137	18	.	.	PUNCT
ajst-30166	137	19	153	153	NUM
ajst-30166	137	20	-	-	SYM
ajst-30166	137	21	173	173	NUM
ajst-30166	137	22	)	)	PUNCT
ajst-30166	137	23	.	.	PUNCT
ajst-30166	138	1	butterworth	butterworth	PROPN
ajst-30166	138	2	-	-	PUNCT
ajst-30166	138	3	heinemann	heinemann	PROPN
ajst-30166	138	4	.	.	PUNCT
ajst-30166	139	1	[	[	X
ajst-30166	139	2	14	14	NUM
ajst-30166	139	3	]	]	PUNCT
ajst-30166	139	4	korin	korin	PROPN
ajst-30166	139	5	,	,	PUNCT
ajst-30166	139	6	i.	i.	PROPN
ajst-30166	139	7	,	,	PUNCT
ajst-30166	139	8	&	&	CCONJ
ajst-30166	139	9	ipiña	ipiña	PROPN
ajst-30166	139	10	,	,	PUNCT
ajst-30166	139	11	j.	j.	PROPN
ajst-30166	139	12	p.	p.	PROPN
ajst-30166	139	13	(	(	PUNCT
ajst-30166	139	14	2010	2010	NUM
ajst-30166	139	15	)	)	PUNCT
ajst-30166	139	16	.	.	PUNCT
ajst-30166	140	1	controlled	control	VERB
ajst-30166	140	2	residual	residual	ADJ
ajst-30166	140	3	stresses	stress	NOUN
ajst-30166	140	4	introduction	introduction	NOUN
ajst-30166	140	5	to	to	PART
ajst-30166	140	6	improve	improve	VERB
ajst-30166	140	7	fatigue	fatigue	NOUN
ajst-30166	140	8	resistance	resistance	NOUN
ajst-30166	140	9	of	of	ADP
ajst-30166	140	10	rotary	rotary	NOUN
ajst-30166	140	11	shouldered	shoulder	VERB
ajst-30166	140	12	connections	connection	NOUN
ajst-30166	140	13	used	use	VERB
ajst-30166	140	14	in	in	ADP
ajst-30166	140	15	oil	oil	NOUN
ajst-30166	140	16	drilling	drilling	NOUN
ajst-30166	140	17	industry	industry	NOUN
ajst-30166	140	18	.	.	PUNCT
ajst-30166	141	1	international	international	ADJ
ajst-30166	141	2	journal	journal	NOUN
ajst-30166	141	3	of	of	ADP
ajst-30166	141	4	pressure	pressure	NOUN
ajst-30166	141	5	vessels	vessel	NOUN
ajst-30166	141	6	and	and	CCONJ
ajst-30166	141	7	pi	pi	NOUN
ajst-30166	141	8	*	*	PROPN
ajst-30166	141	9	*	*	NOUN
ajst-30166	141	10	,	,	PUNCT
ajst-30166	141	11	87(12	87(12	NUM
ajst-30166	141	12	)	)	PUNCT
ajst-30166	141	13	,	,	PUNCT
ajst-30166	141	14	696	696	NUM
ajst-30166	141	15	-	-	SYM
ajst-30166	141	16	703	703	NUM
ajst-30166	141	17	.	.	PUNCT