“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	the preservation of of Shirakawa-go and Gokayama historic villages the preservation of Oslo historic city the preservation of Palermo historic city the preservation of Philadelphia historic city the preservation of Rabat city the preservation of Samarkand historic city the preservation of Segovia historic city the preservation of Seoul historic city the preservation of Siem Reap city the preservation of St.Petersburg historic city the preservation of Sydney historic city the preservation of Vicenza historic city the preservation of Warszawa historic city the preservation of York city The Press The Press Code ofBosnia And Herzegovina the price index of agricultural markets The Price of insanity the price of labour-power the price standard the pricing of corporate debt theory the primary standard for brinell hardness machine the primary standard for gauge block measurement the primary standard for line scale metrology the primary standard of absolute gravimeter

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。