英语词汇“holing-through, heading through, thirling”的音标、翻译、中文意思、用法、释义-英汉双解词典

词汇	holing-through, heading through, thirling
释义	holing-through, heading through, thirling贯通[掘进]; 井巷掘进中，采用一个或两个工作面按预定方向与预定井巷或硐室接通的作业。
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