“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	orthogonal frequency division multiplexing, OFDM orthogonal frequency division multiplexing，OFDM orthogonal function orthogonal functions orthogonal group orthogonal group pair orthogonal group representations orthogonal icosahedron orthogonal idempotent elements orthogonal idempotents orthogonal increment process orthogonal integral equation orthogonal invariance orthogonal invariant orthogonal involution orthogonal iteration orthogonality orthogonality catastrophe orthogonality condition orthogonality of columns orthogonality of mode shapes orthogonality of rows orthogonality of trigonometric functions orthogonality property orthogonality relation

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