id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-18335	Jiang, Zhichao	Design of Titanium Alloy Mixed Sucker Rods Using API Recommendation Method	2024	4	.pdf	application/pdf	2692	90	52	By using the trial and error method to solve 𝑅 , the natural frequency of titanium alloy pumping rods can be obtained: 𝜔 𝑅 𝜔 (14) 4. In this formula, 𝑐 𝐸 /𝜌 / - The propagation speed of sound waves along titanium alloy pumping rods; 𝑐 𝐸 /𝜌 / - The propagation speed of sound waves along the weighting rod; 𝑐 𝐸 /𝜌 / - The propagation speed of sound waves along a single stage weighted rod of the same total length.	cache/ajst-18335.pdf	txt/ajst-18335.txt