“percussion and rotary drilling”的概念、定义、翻译、参考文献-科学参考

单词	percussion and rotary drilling
释义	percussion and rotary drilling Encyclopedia 工学钻井方法释 percussion and rotary drilling冲击旋转钻井在普通旋转钻进的基础上同时使用冲击器，使钻头在冲击动载和静压旋转的联合作用下破碎岩石的钻井方法。
随便看	illustrated edition Illustrated Family Magazine Illustrated Gazetteer of the Countries Overseas Illustrated History of Chinese Literature Illustrated Local Records of Xinjiang Province Illustrated Novel Magazine Illustrated Pharmacopoeia illustrating one's personality by describing the appearance illustration Illustration and Binding Committee under China Artists Association illustration of radioactive measuring data illustration of textbook Illustration of the Fifteen Feudal States Mentioned in the Book of Odes Illustration Photography Illustrations and Explanations of Ceramic Production Illustrations and Explanations of Several Newly-built Devices Illustrations for A Dream of Red Mansions Illustrations for the "Artificer's Record" Illustrations of Military Victories "Illustrations of Rivers and Canals", Illustrated Record of Chang'an illustrations of The Biographies of Exemplary Women Illustrations of the Li People in Hainan Island illustrative illustrative diagram illustrative example

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。