“percussive rotary drilling rig”的概念、定义、翻译、参考文献-科学参考

单词	percussive rotary drilling rig
释义	percussive rotary drilling rig Encyclopedia 工学探矿机械释 percussive rotary drilling rig冲击回转钻机用冲击和回转两种方式同时破碎岩石的钻机。
随便看	stress effect of daodi herbs stress element stress-energy tensor stress equalizing stress evasion stress fatigue stress fiber stress field stress field of dislocations stress-freezing method of photoelasticity stressful life events stressful life event，SLE stress function stress functions stress gradient hypothesis stress granule stress growth stress-growth law stress hormone stress hyperglycemia stress in farm animals stress injuries stress in rock mass stress intensity stress intensity factor

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