“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	Pollutant Cconversion Technology pollutant characterization Pollutant Collection Facility Pollutant Diffusion Control Technology Pollutant Diffusion Technology Pollutant Discharge Calculation Pollutant Discharge Coefficient pollutant discharge coefficient in animal production pollutant discharge permit management system Pollutant emission factors pollutant emission factors pollutant form pollutant from chemical fertilizer pollutant from of irrigating water source pollutant from organic fertilizer Pollutant Generation Coefficient pollutant generation coefficient in animal production pollutant migration pollutant of water body pollutant release pollutant removal efficiency Pollutant Separation Technology pollutants from sluge Pollutants in Military Operational environment pollutants in water

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