英语词汇protactinium怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	protactinium
释义	protactinium/prəʊtækˈtiniəm/n. Chem. a radioactive metallic element whose chief isotope yields actinium by decay (symbol 符 Pa) 【化】(化学元素)镤 [German (as PROTO-, ACTINIUM)]
随便看	mule mule mule deer muleteer mulga muliebrity mulish mulishly mulishness mull mull mull mull mull mullah mullein muller mullet mulligatawny mullion mullioned mullock mulloway multangular multi-

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