“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	short inter-frame space, SIFS short interspersed element short interspersed nuclear element short interspersed repeated sequence short line short lived intermediates short lived nucleus short-lived nucleus short-lived plant short-lived radionuclide dating short-lived star short lyric short memory model short memory stationary process short memory time series short message communication Short message service short/micro film short multiplication Short Natural Treatises shortness shortness exponent shortnose chimaeras short-nosed fruit bat short-of-print book

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。