“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	forest expectance return rate forest expectation price method Forest Fire forest fire forest fire cycle period forest fire detection forest fire disasters in China forest fire ecology forest fire environment forest firefighting equipment forest fire fighting vehicle forest fire management forest fire monitoring by remote sensing forest fire monitoring system forest fire prediction forest fire prevention forest fire pump forest fire suppression forest fire warning system forest floor decomposition forest food forest-forest steppe faunal group of temperate zone in China forest for sand fixation forest for soil and water conservation forest for special purpose

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。