“孔底动力钻具”的概念、定义、翻译、参考文献-科学参考

单词	孔底动力钻具
释义	孔底动力钻具 Encyclopedia 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	ascending chain ascending chain condition ascending chain condition for left ideals ascending development method ascending difference ascending earth station ascending factorial ascending ideal series ascending induction ascending node ascending normal series ascending order ascending order of powers ascending phase ascending powers ascending power series ascending reticular activation ascending sequence ascending series ascending the clear and descending the turbid ascending water electrode ascending，descending，exiting and entering Ascend Sanshan in the Night and Still Look at Jingyi ascension ascensional force

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。