“冲击旋转钻井”的概念、定义、翻译、参考文献-科学参考

单词	冲击旋转钻井
释义	冲击旋转钻井 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	urban population base of China urban population density urban population distribution in China urban population problems in China urban population projection urban population size in the administration area of city urban population structure urban postal system planning urban power distribution network urban power supply sources urban power supply system planning urban primacy urban problems in China urban protected areas urban public art urban public center system urban public economy urban public facilities urban public facilities design urban public space Urban Public Transportation in Canada urban public transportation system Urban public transport lines urban public utility urban pulic space planning

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。