“井下动力钻具”的概念、定义、翻译、参考文献-科学参考

单词	井下动力钻具
释义	井下动力钻具 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。
随便看	Voluntary Air Fleet of the Soviet Union voluntary attention voluntary breathing voluntary clients voluntary confession rule voluntary detoxification voluntary emission reduction voluntary failure theory Voluntary Guidelines on Tenure Voluntary Information Disclosure voluntary labeling voluntary labor on Saturday voluntary movement Voluntary Organizations Active in Disaster voluntary policing societies voluntary service voluntary sexual intercourse voluntary surrender volunteer volunteer at library Volunteer Drivers and Mechanics from Nanyang volunteer fire brigade volunteer geographic information collection volunteer organization for safety volunteer spirit

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。