英语词汇“promethium”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	promethium
释义	promethium /preuh mee"thee euhm/, n. Chem. a rare-earth, metallic, trivalent element. Symbol: Pm; at. no.: 61. [1945-50; < NL; see PROMETHEUS, -IUM]
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