“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	lead storage battery lead styphenate lead sub-carbonate lead sulfate lead sulfide lead sulphide lead telluride lead tetraacetate lead tetraoxide lead tetroxide lead-through lead time lead-time lead tin alloy lead-tin alloy lead-tin-telluride lead track lead white leadwort family lead (Ⅱ) carbonate, basic lead(Ⅱ)chloride lead(Ⅱ)iodide lead(Ⅱ)nitrate lead(Ⅱ)sulfate lead(Ⅱ)sulfide

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