英语词汇“rubidium”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	rubidium
释义	rubidium —rubidic, adj. /rooh bid"ee euhm/, n. Chem. a silver-white, metallic, active element resembling potassium, used in photoelectric cells and radio vacuum tubes. Symbol: Rb; at. wt.: 85.47; at. no.: 37; sp. gr.: 1.53 at 20°C. [1860-65; < NL, equiv. to L rubid(us) red (in allusion to the two red lines in its spectrum) + -ium -IUM]
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