“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	production of space production of sponge titanium production of tantalum production of vacuum production of zirconium powder production of zirconium sponge production operation budget Production operation control Production operation integration strategy production order production organization of mineral processing plant Production-oriented approach production permit production planning Production Planning and Control System production planning and scheduling production planning and scheduling for mineral processing production planning and scheduling optimization production planning execution system production planning management production planning system production platform production population production price production process

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