英语词汇“protactinium”的读音、意思、造句、用法及中英文翻译-迷途网

词汇	protactinium
释义	protactinium noun /ˌprəʊtækˈtɪniəm/ /ˌprəʊtækˈtɪniəm/ [uncountable] (symbol Pa) a chemical element. Protactinium is a radioactive metal found naturally when uranium decays .镤（放射性化学元素）词源early 20th cent.: from proto- ‘original, earlier’ + actinium, so named because one of its isotopes decays to form actinium.
随便看	nonconcentrative nonconcentrativeness nonconcentrativenesses nonconcentric nonconcentrical nonconcentrically nonconcentricities nonconcentricity nonconceptually nonconcession nonconcessions nonconcessive nonconciliating nonconciliatory nonconcluding nonconclusive nonconclusively nonconclusiveness nonconclusivenesses noncondemnation noncondemnations noncondensation noncondensations noncondescending non-condescending

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