“螺杆钻具”的概念、定义、翻译、参考文献-科学参考

单词	螺杆钻具
释义	螺杆钻具 Encyclopedia 理学孔内钻具释 positive displacement motor drill螺杆钻具将钻井循环介质的液压能转化为机械能的容积式孔底动力钻具。简称螺杆钻。
随便看	optical libration of the Moon optical light optical limiting optical limiting polymer optical line shape function optical line termination，OLT optical logic optical logic device optical luminosity function optically active substance optically denser medium optically identified object optically identified source [optically] negative crystal optically negative crystal [optically] positive crystal optically positive crystal optically rarer medium Optically Stimulated Luminescence Dating optically stimulated Luminescence dating optically stimulated luminescence dosimeter optically Stimulated Luminescence for identification of irradiated food optically stimulated luminescence radiation detector optically thick optically thick medium

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。