“jack line”的概念、定义、翻译、参考文献-科学参考

单词	jack line
释义	jack line [`jak ´līn] ^{PETROLEUM ENGINEERING} A steel cable or rod that connects the arms of the central pumping engine to the two or more wells that are being pumped.
随便看	composition-of-velocities law composition plane composition resistor composition series composition surface compositum compost compound compound acinous gland compound alluvial fan compound angle compound compact compound cryosar compound curve compound die compound distribution compound elastic scattering compound engine compound event compound eye compound fault compound field winding compound generator compound gland compounding

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