“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	center of purity center of range center of reduction center of reflection center of rotation center of similarity center of similitude center of subsidence center of symmetry Center of the World center of volume center point center point grounding resister center-projective centers for supervision, inspection and testing of agricultural genetically modified organisms of Ministry of Agriculture and Rural Affairs of China Centers for the Acquisition and Dissemination of Scientific and Technical Information centers method centers of crop diversity centers of origin of crops Center Stage center surface center symmetrical figure center-to-center distance center valued trace center-valued trace

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。