id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fis-3085	Wang, Bo	Dynamic strength analysis of the key components of the beam-type pumping unit with dynamic tracking balance	2021	9	.pdf	application/pdf	4434	229	62	Variable speed drive optimization model and analysis of comprehensive performance of beam pumping unit. Design and implementation of a dual PWM frequency converter used in beam pumping unit for energy saving.	cache/fis-3085.pdf	txt/fis-3085.txt