英语词汇“prop-free”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	prop-free
释义	prop-free prop-free [′präp ‚frē] (mining engineering) A face with no posts between the coal and the conveyor used to remove it in longwall mining of a coal seam.
随便看	ktuf ktug ktul ktunaxa/kinbasket tribal council ktur k'tura ktura k'turah kturah k-tuts ktuts kt/v ktv ktva ktvhts ktvr ktvtc ktw ktwg ktwk ktwr ktws ktwt ktwv ktwws

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