英语词汇“roof-fall exploitation (caving) hard coal mining”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典-复社网

单词	roof-fall exploitation (caving) hard coal mining
释义	roof-fall exploitation (caving) hard coal mining [固定建筑物] 顶部下挖式开采（挖陷式），硬煤开采
随便看	merchandry merchands merchandy merchant merchantabilities merchantability merchantability specification merchantable merchantable bole merchantable coal merchantable diameter limit merchantable formfactor merchantable fuel merchantable fuels merchantable gasoline merchantable goods merchantable height merchantable length merchantable log merchantableness merchantable oil merchantable ore merchantable product merchantable quality merchantable timber

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