“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	parabolic-cylinder coordinate parabolic cylinder differential equation parabolic cylinder function parabolic cylindrical surface parabolic differential equation parabolic differential operator parabolic differential system parabolic dish antenna parabolic element parabolic-elliptic motion parabolic equation parabolic-equation method parabolic exponential function parabolic fixed point parabolic folium parabolic form parabolic formula parabolic geometry parabolic homology parabolic horn cyclide parabolic hyperbola parabolic-hyperbolic parabolic hyperbolism parabolic index fiber parabolic interpolation

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