... 旋转冲唤钻进：rotary percussion drilling 旋转冲唤钻机：rotary percussion drill 旋回离心机：gyratory centrifuge ...
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rotary-percussion drill jumbo 回转冲击式钻车
rotary-percussion n drill jumbo 回转冲击式钻车
Drill rotary percussion 旋转打击钻
percussion-rotary drill 冲击器
rotary percussion drill
旋转冲击钻机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In rock drilling process with percussion-rotary drill rotating drilling tool bears two toques: dynamic torque which drives drilling tool into rock mass, and resistance torque of rock mass.
前言：在冲击—回转式凿岩机向岩石钻进过程中，旋转中的钻具承受着两种力矩的作用：一是驱动其旋转的动力矩；二是被钻岩石阻止其旋转的阻力矩。
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