英语词汇“rotary drill bitrotary boring headdeep drilling”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	rotary drill bitrotary boring headdeep drilling
释义	rotary drill bitrotary boring headdeep drilling 固定建筑物旋转钻头旋转钻孔头，深钻
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