“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	reduction-oxidation reaction reduction parameter reduction period of electric furnace steelmaking reduction potential reduction principle reduction principle for the computably enumerable sets reduction process reduction ratio reduction reaction reduction smelting reduction strategy reduction system reduction techniques of powders reduction theorem reduction theory reduction theory [of von Neumann algebra] reduction theory of von Neumann algebra reduction to absurdity reduction to a common denominator reduction to a horizontal plane of magnetic anomaly reduction to arithmetic reduction to canonical form reduction to centering reduction to sea-level reduction to the diagonal

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。