id	sid	eid	entity	type
ajst-21782	1	1	academic journal of science and technology issn	ORG
ajst-21782	1	2	2771-3032	CARDINAL
ajst-21782	2	1	11	CARDINAL
ajst-21782	2	2	1	CARDINAL
ajst-21782	2	3	2024 169	DATE
ajst-21782	2	4	ding1	GPE
ajst-21782	2	5	juan huang1	PERSON
ajst-21782	2	6	zhang2	DATE
ajst-21782	2	7	1	CARDINAL
ajst-21782	2	8	china mobile group zhejiang co.	ORG
ajst-21782	3	1	wenzhou	GPE
ajst-21782	3	2	wenzhou	GPE
ajst-21782	3	3	325003	DATE
ajst-21782	3	4	china 2	ORG
ajst-21782	3	5	wenzhou polytechnic	GPE
ajst-21782	3	6	wenzhou	GPE
ajst-21782	3	7	325035	DATE
ajst-21782	3	8	china	GPE
ajst-21782	4	1	at89s51	ORG
ajst-21782	7	1	tda2030	NORP
ajst-21782	9	1	40～60hz	DATE
ajst-21782	10	1	at89s51	ORG
ajst-21782	11	1	1	CARDINAL
ajst-21782	11	2	decades	DATE
ajst-21782	13	1	four	CARDINAL
ajst-21782	14	1	1906	DATE
ajst-21782	14	2	american lee de forest	ORG
ajst-21782	15	1	1927	DATE
ajst-21782	15	2	bell	ORG
ajst-21782	17	1	the 1950s	DATE
ajst-21782	19	1	the 1960s	DATE
ajst-21782	21	1	the early 1960s	DATE
ajst-21782	21	2	the united states	GPE
ajst-21782	22	1	the early 1970s	DATE
ajst-21782	24	1	the mid-1970s	DATE
ajst-21782	24	2	japan	GPE
ajst-21782	24	3	first	ORDINAL
ajst-21782	25	1	up to 90db	CARDINAL
ajst-21782	25	2	100khz	DATE
ajst-21782	26	1	today	DATE
ajst-21782	27	1	the 1980s	DATE
ajst-21782	30	1	2	CARDINAL
ajst-21782	30	2	2.1	CARDINAL
ajst-21782	33	1	around 30%	PERCENT
ajst-21782	36	1	2.2	CARDINAL
ajst-21782	36	2	zero	CARDINAL
ajst-21782	37	1	only one	CARDINAL
ajst-21782	40	1	2.3	CARDINAL
ajst-21782	41	1	170	CARDINAL
ajst-21782	44	1	2.4	CARDINAL
ajst-21782	46	1	fidelity	ORG
ajst-21782	46	2	at least four	CARDINAL
ajst-21782	47	1	three	CARDINAL
ajst-21782	48	1	only 0~5mv	DATE
ajst-21782	50	1	5v	CARDINAL
ajst-21782	52	1	3	CARDINAL
ajst-21782	52	2	3.1	CARDINAL
ajst-21782	52	3	3.1.1	CARDINAL
ajst-21782	53	1	otl circuit	ORG
ajst-21782	53	2	the otl circuit	ORG
ajst-21782	54	1	only one	CARDINAL
ajst-21782	57	1	symmetrical ocl	ORG
ajst-21782	61	1	tda2030	NORP
ajst-21782	68	1	distortion(±14v/4ω，thd=0.5%	PERCENT
ajst-21782	71	1	1	CARDINAL
ajst-21782	72	1	1	CARDINAL
ajst-21782	73	1	1	CARDINAL
ajst-21782	73	2	tda2030	NORP
ajst-21782	76	1	r3	ORG
ajst-21782	76	2	several tens	CARDINAL
ajst-21782	78	1	5	CARDINAL
ajst-21782	78	2	3	CARDINAL
ajst-21782	79	1	5	CARDINAL
ajst-21782	79	2	3	CARDINAL
ajst-21782	81	1	c4	GPE
ajst-21782	81	2	c5	GPE
ajst-21782	86	1	2	CARDINAL
ajst-21782	86	2	ac-dc negative feedback circuit	ORG
ajst-21782	89	1	2	CARDINAL
ajst-21782	91	1	171	CARDINAL
ajst-21782	91	2	4	CARDINAL
ajst-21782	94	1	c7	PERSON
ajst-21782	98	1	c7	PERSON
ajst-21782	99	1	c7	PERSON
ajst-21782	103	1	1 11 1	CARDINAL
ajst-21782	103	2	1	CARDINAL
ajst-21782	103	3	1	CARDINAL
ajst-21782	103	4	1	CARDINAL
ajst-21782	106	1	2	CARDINAL
ajst-21782	107	1	1	CARDINAL
ajst-21782	109	1	uuu 	PERSON
ajst-21782	109	2	3	CARDINAL
ajst-21782	109	3	11	CARDINAL
ajst-21782	110	1	1 1112	CARDINAL
ajst-21782	111	1	ruu	ORG
ajst-21782	111	2	f	ORG
ajst-21782	111	3	4	CARDINAL
ajst-21782	112	1	l o o	DATE
ajst-21782	112	2	5	CARDINAL
ajst-21782	112	3	3.2	CARDINAL
ajst-21782	113	1	bandstop	ORG
ajst-21782	116	1	2	CARDINAL
ajst-21782	116	2	2	CARDINAL
ajst-21782	116	3	3.3	CARDINAL
ajst-21782	121	1	two	CARDINAL
ajst-21782	122	1	zero	CARDINAL
ajst-21782	124	1	3.4	CARDINAL
ajst-21782	124	2	only a few tens of db	MONEY
ajst-21782	125	1	one	CARDINAL
ajst-21782	127	1	172 3.4.1	CARDINAL
ajst-21782	128	1	op07	PRODUCT
ajst-21782	129	1	only 104	CARDINAL
ajst-21782	132	1	opa227	ORG
ajst-21782	132	2	3	CARDINAL
ajst-21782	135	1	3	CARDINAL
ajst-21782	135	2	3.5	CARDINAL
ajst-21782	137	1	two	CARDINAL
ajst-21782	140	1	3.6	CARDINAL
ajst-21782	141	1	3.6.1	CARDINAL
ajst-21782	141	2	ad0809	ORG
ajst-21782	141	3	8	CARDINAL
ajst-21782	143	1	8	CARDINAL
ajst-21782	143	2	8	CARDINAL
ajst-21782	145	1	3.6.2	CARDINAL
ajst-21782	145	2	11	CARDINAL
ajst-21782	145	3	11	CARDINAL
ajst-21782	148	1	3.7	CARDINAL
ajst-21782	149	1	at89s51	PRODUCT
ajst-21782	149	2	5	CARDINAL
ajst-21782	153	1	4	CARDINAL
ajst-21782	153	2	4.1	CARDINAL
ajst-21782	154	1	ac millivoltmeter	ORG
ajst-21782	154	2	4.2	CARDINAL
ajst-21782	155	1	1	CARDINAL
ajst-21782	155	2	0.44ω	CARDINAL
ajst-21782	156	1	1	CARDINAL
ajst-21782	156	2	1	CARDINAL
ajst-21782	156	3	19.8	CARDINAL
ajst-21782	156	4	20.1	CARDINAL
ajst-21782	156	5	4.7	CARDINAL
ajst-21782	156	6	29.8 11.2	CARDINAL
ajst-21782	156	7	4.3	CARDINAL
ajst-21782	158	1	three	CARDINAL
ajst-21782	158	2	5v	CARDINAL
ajst-21782	162	1	tda2030	NORP
ajst-21782	163	1	firstly	ORDINAL
ajst-21782	164	1	0v	CARDINAL
ajst-21782	174	1	173	CARDINAL
ajst-21782	176	1	5	CARDINAL
ajst-21782	181	1	ad16	ORG
ajst-21782	184	1	2023	CARDINAL
ajst-21782	184	2	323	CARDINAL
ajst-21782	184	3	wenzhou science	ORG
ajst-21782	185	1	first	ORDINAL
ajst-21782	185	2	wenzhou	GPE
ajst-21782	185	3	1	CARDINAL
ajst-21782	186	1	1	CARDINAL
ajst-21782	186	2	s. m. mei	PERSON
ajst-21782	186	3	h. hu	PERSON
ajst-21782	186	4	h. xu	PERSON
ajst-21782	186	5	h. q. wen	PERSON
ajst-21782	186	6	11	CARDINAL
ajst-21782	186	7	19	CARDINAL
ajst-21782	186	8	3244	CARDINAL
ajst-21782	186	9	2022	CARDINAL
ajst-21782	187	1	2	CARDINAL
ajst-21782	187	2	n. utomo et al.	PERSON
ajst-21782	187	3	85.1%	PERCENT
ajst-21782	187	4	70	DATE
ajst-21782	187	5	12	CARDINAL
ajst-21782	187	6	4692-4704	CARDINAL
ajst-21782	187	7	dec. 2023	DATE
ajst-21782	188	1	3	CARDINAL
ajst-21782	188	2	m. khoshsaligheh	PERSON
ajst-21782	188	3	communication & technology	ORG
ajst-21782	188	4	66	CARDINAL
ajst-21782	188	5	2024	DATE
ajst-21782	189	1	4	CARDINAL
ajst-21782	189	2	n. sowa	PERSON
ajst-21782	189	3	x. m. zeng	PERSON
ajst-21782	189	4	4	CARDINAL
ajst-21782	189	5	2023	CARDINAL
ajst-21782	190	1	5	CARDINAL
ajst-21782	190	2	8	CARDINAL
ajst-21782	190	3	1516	CARDINAL
ajst-21782	190	4	2017	DATE
ajst-21782	191	1	6	CARDINAL
ajst-21782	191	2	a. j. marcinkevičius	PERSON
ajst-21782	191	3	41-44, 2010	DATE