“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	myth of Yellow Emperor myth of Yi myth of Yu the Great myth of Zhuanxu mytholog mythological archetypal criticism Mythological Drama mythology study of ancient history distinguish school Mythopoeic School My Thoughts on Calligraphy myth play myths about the emergence of humans myths about the emergence of the universe myths about the invention of culture Myths and Legends Myths of Kojiki and Nihonshoki Myungdong Theater Myung-gon Kim Myvawax My Way Home My wife married my brother myxobacteria myxomycete myxopodium myxosporangium

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