“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	Sun Shengyun Sun Shenxing Sun Shi Sun Shian Sun Shibai Sun Shigang sunshine Sunshine Coast sunshineduration sunshine duration in China sunshine duration measurement sunshine duration measurement instrument Sunshine Hotline Sunshine in Spring sunshine intensity sunshine percentage in China sunshine recorder Sunshine Sketches of a Little Town Sunshine Sports campaign sunshine unit sunshining deformation observation Sunshi Taiji Quan Sun Shiyi Sun Shouquan Sun Shu

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