“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	partial radial distribution function, partial RDF partial radial distribution function; partial RDF partial radiation conditions partial range partial rank correlation coefficient partial rate factor partial RDF partial realization problem partial reciprocal difference partial recursive function partial recursive operator partial recursive scheme partial recursivity partial reductio ad absurdum partial refinement partial regression partial regression coefficient partial reinforcement effect partial relation partial remainder partial report procedure partial residual partial result partial sampling partial semigroup

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。