英语词汇“francium”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	francium
释义	Trends of francium View usage for: francium in British English (ˈfrænsɪəm) noun an unstable radioactive element of the alkali-metal group, occurring in minute amounts in uranium ores. Symbol: Fr; atomic no: 87; half-life of most stable isotope, 223Fr: 22 minutes; valency: 1; melting pt: 27°C; boiling pt: 677°C Word origin C20: from New Latin, from France + -ium; so-called because first found in France francium in American English (ˈfrænsiəm) noun a radioactive chemical element, an alkali metal, existing in minute amounts in nature as a decay product of actinium: symbol, Fr; at. no., 87 Word origin ModL < France2 + -ium Word lists with francium chemical
随便看	fuss over fusspot fussy fust fustanella fustanelle fustet fustian fustianise fustianist fustianize fustic fustier fustiest fustigate fustigation fustigator fustigatory fustilarian fustilirian fustillirian fustilugs fustily fustiness fusty

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Trends offrancium