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词语 promethium
类别 英语翻译词典
释义 pro·me·thiumBrE /prəˈmiːθiəm/NAmE /prəˈmiːθiəm/ noun [U] (symbol Pm) a chemical element. Promethium is a radioactive metal that was first produced artificially in a nuclear reactor and is found in small amounts in nature 钷(放射性化学元素)
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