英语词汇“long-pillar work”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	long-pillar work
释义	long-pillar work long-pillar work [′lȯŋ ¦pil·ər ‚wərk] (mining engineering) A coal-winning technique used in underground mining in which large pillars of coal are left as the face is advanced; finally all the pillars are removed together.
随便看	pweep pweeta pwef pwei pwelc pwelpcap pwem pwep pwerm pwes pwesq pwet pwetf pweto, zaire pweu pwf pwfa pwfaa pwfb pwfbh pwfc pwfd pwfg pwfi pwfp

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