... rotary percussive drilling 回转冲魂进 rotary percussion drilling 旋转冲唤钻进 ; 旋转冲击钻井 rotary vibratory drilling 旋转振动钻井 ...
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percussive rotary drilling 冲积转式钻眼 ; 冲积钻钻探
rotary y percussive drilling 回转冲魂进
percussive-rotary drilling 冲击旋转钻井
auger-percussive-rotary drilling 螺旋冲击回转钻进
percussive-rotary extruding drilling 冲击回转挤压钻进
pneumatic percussive rotary drilling 风动冲击回转钻进
percussive rotary drilling technology 冲旋钻井技术
percussive e rotary drilling 冲积钻钻探
percussive-rotary wire-line drilling 绳索取心冲击回转钻进
This instrument, simple in structure and of multi-function, may be used to measuring the drillability and abrasivity of rocks, and simulate rotary or rotary-percussive drilling as well.
该仪器结构简单，具有多种功能，可进行回转或冲击回转钻进法的可钻性测试及钻进规程的模拟，也可用来测试岩石研磨性。
Study on the percussive rotary drilling law under various temperatures is of great significance because it can provide a theoretical basis for new drilling process designed for geothermal production.
研究不同温度条件下冲击回转凿岩规律具有重要意义，可以为设计地热开采的新型钻探方法提供理论依据。
The percussive - rotary drilling technology is one of the most effective ways to solve the drilling difficulties in hard rock in recent years. The technology has a good application prospect.
旋冲钻井技术近年来已成为石油钻井界广泛关注的热点研究课题，被认为是解决深井硬地层钻进难题的最有效方法之一，具有良好的应用前景。
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