id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-16336	Cai, Changping; Li, Jun; Yuan, Ye; Liu, Chengcheng; Wang, Junlong	Research on Measuring System of Sodium Hydroxide Concentration in Impregnation Solution Based on Ultrasonic Velocity Method	2024	3	.pdf	application/pdf	1843	92	41	Keywords: Time of flight measurement; Field programmable gate array; Ultrasonic sound velocity; Concentration detection. The methods of sound speed measurement mainly include interference method, pulse echo method, superposition method, repetition method, etc[3].	cache/ajst-16336.pdf	txt/ajst-16336.txt