“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	involute involute conical gear involute cylindrical gear drive involute cylindrical gear reducer involute helicoid involute of a circle involute of a curve involute of evolute involute planetary reducer with small difference between the numbers of teeth involution involution algebra involutional system involution axioms involution condition involution curve involution form involution net involution of a composition algebra involution of a division ring involution of a group involution of an algebra involution of a ring involution of forms involution of lines involution of planes

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