“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	satellite gravity survey satellite gravure press satellite ground quantum key distribution experiment satellite ground tracking satellite hydrology satellite image database satellite image map satellite image navigation and registration satellite inclination Satellite italiano per Astronomia X satellite Ka phased array antenna satellite knot satellite laser ranger，SLR satellite laser ranging satellite launching tower satellite L band injection antenna satellite life satellite life prediction and assessment in orbit satellite line satellite line, satellite satellite magnetic survey satellite measurement for earth gravity field satellite meteorology satellite motion satellite navigation

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