“downhole motor”的概念、定义、翻译、参考文献-科学参考

单词	downhole motor
释义	downhole motor Encyclopedia 工学钻井装备释 downhole motor井下动力钻具连接在钻铤与钻头之间，随钻柱一起下入井底，驱动钻头旋转破岩的动力机。又称井下马达。理学钻具释 downhole motor孔底动力钻具位于钻柱下部，由钻井液（循环介质）或电力驱动，实现回转、冲击碎岩的钻具。
随便看	radio-frequency plasma radio frequency quadrupole linear accelerator radio-frequency radiation radio frequency resonant accelerator radio frequency, RF radio frequency sensor radio-frequency signal radio-frequency spectrum radio-frequency sputtering radio-frequency sputtering, RF sputtering radiofrequency thermocoagulation for trigeminal neuralgia radio frequency treatment devices radio fuze electronic warfare radio - galaxy radio galaxy radio-galaxy Hubble diagram radiogenic radiogenic heat radiogentic heat in the earth radiogeodesy Radio Globo radiogold radiogoniometer radiogram radiograph

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