英语词汇“square set system”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	square set system
释义	square set system noun : a method of timbering a mine in which heavy timbers are framed together in rectangular sets 6 or 7 feet high and from 4 to 6 feet long so as to fill in as the ore body is removed by overhand stoping
随便看	lutetium luteum lutfisk luth luther lutheran lutheran lutheranism lutheran window lutherism luthern luthier lutianidae lutidine lutidinic lutidinic acid luting lutist lutjanid lutjanidae lutjanus luton lutong lutra lutraria

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