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-现代词典

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	proposition propositional propositional propositional calculus propositional function propositionally proposition bet propositus propound propounder propoxy propoxy- propoxyphene propped propper propping propr propraetor propraetorial propraetorian propranolol propre propretor propretorial propria

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