英语词汇“radon”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	radon
释义	radonradon /ˈreɪdɑn/ noun [uncountable] (symbol Rn) Etymology ETYMOLOGYradon Origin: 1900-2000 radium science, chemistry a radioactive gas that is an element and that can be dangerous in large amounts
随便看	prefab prefabricate prefabricated prefabrication preface prefatory prefect prefecture prefer preferable preferably preference preferential preferentially preferment preferred stock prefiguration prefigure prefix pregame pregnancy pregnant preheat prehensile prehistoric

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