“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	transitive relation transitive representation transitive set transitive structure transitive subgroup transitive tournament transitive transformation transitive transformation group transitive triangular algebra transitive triple transitivity transitivity class transitivity formula Transitivity Hypothesisrealis transitivity law transitivity lemma transitivity of equipollence transitivity set transitman transit marks transit method transit network transit of Jovian satellite transit of Jupiter's satellite transit of Mercury

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。