“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	reduced echelon form reduced elliptic fibration reduced energy gap reduced enumeration reduced equation reduced extremal distance reduced eye reduced form reduced formula reduced fraction reduced free group reduced game reduced G-bundle reduced gradient reduced gradient method reduced graphene oxide reduced Grobner basis reduced Grothendieck group reduced group reduced group C*algebra reduced hemoglobin reduced homology group reduced homology sequence reduced incidence algebra reduced inspection

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。