id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-4776	Liu, Hongbin; Luo, Wei; Sun, Haobin	Analysis of Pump Efficiency and Feed Flow Under the Condition of Flexible Rate	2023	7	.pdf	application/pdf	4559	192	53	The main influencing factors of pump efficiency can be summarized into the following four aspects: ηS——the effective stroke coefficient of the plunger, ηF——the coefficient of the fullness degree of pump; ηL——leakage coefficient of the pump; ηV——volume coefficient of crude oil under submerged pressure. Oil pumping pump 14.	cache/ajst-4776.pdf	txt/ajst-4776.txt