“rock drill”的概念、定义、翻译、参考文献-科学参考

单词	rock drill
释义	rock drill Encyclopedia 工学机械式打桩机释 rock drill凿岩钻机安装有回转钻进机构或凿岩机，在岩石或混凝土等脆性材质上凿孔的机械。工学凿岩机械释 rock drill凿岩机以冲击作用为主，回转作用为辅，凿碎岩石，进行钻孔的机械设备。
随便看	radio waveguide radio wavelength band radio wave penetration method radio wave propagation radio wave propagation during reentry radio wave propagation in the ionosphere radio wave propagation in tropospheric radio duct radio wave propagation via the sporadic E layer radio wave scattering of the solar corona radio waves propagation mechanism radio window radio wind radar radish radish seed radium radium-223 radium[223Ra]dichloride radium-226 radium-228 radium-beryllium neutron source radium isotope hydrogeology radium standard RADIUS radius radius function

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