英语词汇“rock drills”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	rock drills
释义	rock drills 基本英英例句凿岩机原型rockdrill的复数名词 rock drill: a drill for penetrating rockThe rock drill is indispensable for digging coal mines.凿岩机是煤炭采掘不可缺少的工具。 Often, water is pumped into specially drilled wells to dissolve the rock -salt deposits.水经常抽入特别地凿岩机溶解沉积的岩盐。
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