英语词汇“roche alum”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	roche alum
释义	roche alum /rohch/, Chem. an alumlike substance derived from alunite. [1400-50; roche cliff, rocky height (now obs.), late ME (see ROCK¹); appar. partial trans. of MF alum en roque, alun de roche]
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