back-side-crank pumping unit造句

"back-side-crank pumping unit"是什么意思

造句与例句手机版

Back - side - crank pumping unit
单拐多连杆抽油设备
It's difficult to see back-side-crank pumping unit in a sentence. 用back-side-crank pumping unit造句挺难的

相邻词汇

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