“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	fire emergency lighting device fire emergency rescue fire endurance of building member fire engines fire equipment fire evacuation fire evidence collection fire extinguisher fire extinguishing system fire extinguishment fire factor firefighter firefighter protective equipments firefighters' lift fire fighting firefighting and rescue equipments fire-fighting clothing firefighting command firefighting command decision fire fighting commander fire-fighting emergency rescue management firefighting equipments fire fighting force fire-fighting internet of things firefighting luminaire

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。