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 noun uncountable chemistry UK /ˌprəʊtækˈtɪniəm/ DEFINITIONS1 1 a chemical element that is a radioactive metal. Its symbol is Pa. Synonyms and related words Chemical elements actinium alkali metal aluminium protactinium noun uncountable chemistry US /ˌproʊtækˈtɪniəm/ DEFINITIONS1 1 a chemical element that is a radioactive metal. Its symbol is Pa. Synonyms and related words Chemical elements actinium alkali metal aluminum
随便看	non-committed noncompatibility noncompetitive non-compliance noncompliance non compos mentis nonconformist nonconformity non-contributory non-cooperation noncooperation non-count noncount non-custodial noncustodial non-dairy non-defining relative clause nondelivery nondepressed nondepressive nondepressive disorder nondescript nondigital nondisclosure agreement non-dom

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