英语词汇“protactinium”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	protactinium
释义	protactinium /proh'tak tin"ee euhm/, n. Chem. a radioactive, metallic element. Symbol: Pa; at. no.: 91. Also, protoactinium. [1915-20; PROT- + ACTINIUM]
随便看	Australian cattle dog Australian crawl Australian doubles Australian fan palm Australian Illawarra Shorthorn Australianize Australian kelpie Australian pine. Australian Rules football Australian rye grass. Australian tea tree Australian terrier Australoid australopithecine Australopithecus Australopithecus afarensis Australopithecus africanus pareira brava paren. parenchyma parens parens. parent parentage parental

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