英语词汇“chainwall”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	chainwall
释义	chainwall chainwall [′chān ‚wȯl] (mining engineering) A coal mining technique in which the mine roof is supported by coal pillars, between which the coal is mined away.
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