英语词汇“hard-coal plough”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	hard-coal plough
释义	hard-coal plough hard-coal plough [′härd¦kōl ‚plau̇] (mining engineering) A plough-type cutter-loader consisting of rigid or swiveling kerfing bits which precut the coal in hard-coal seams.
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