“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	complete Latin square complete lattice complete lattice-ordered group complete law of contraposition complete law of double negative complete leaf Complete Library in the Four Branches of Literature, hand-copied edition by Imperial Household Department, Qianlong era, Qing Dynasty Complete Library of Four Treasuries Complete life table complete lift complete limit complete linear group complete linear series complete linear system complete linkage Complete Literature Works of Liao Dynasty Complete Literature Works of Song Dynasty Complete Literature Works of Tang Dynasty Complete Literature Works of Tang Dynasty Supplement complete local ring complete logic complete lower semi-lattice completely additive completely additive class completely additive function

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。