英语词汇“polonium”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	polonium
释义	Trends of polonium View usage for: polonium in British English (pəˈləʊnɪəm) noun a very rare radioactive element that occurs in trace amounts in uranium ores. The isotope polonium-210 is produced artificially and is used as a lightweight power source in satellites and to eliminate static electricity in certain industries. Symbol: Po; atomic no: 84; half-life of most stable isotope, 209Po: 103 years; valency: –2, 0, 2, 4, or 6; relative density (alpha modification): 9.32; melting pt: 254°C; boiling pt: 962°C Word origin C19: New Latin, from Medieval Latin Polōnia Poland; named in honour of the Polish nationality of its discoverer, Marie Curie polonium in American English (pəˈloʊniəm) noun a radioactive, nonmetallic chemical element formed naturally by the disintegration of radium or synthetically by the neutron irradiation of bismuth followed by beta decay: used as a power source in space satellites, as an aid in inducing electric discharges, etc.: symbol, Po; at. no., 84 Word origin ModL: so named (1898) by its co-discoverer Curie , after her native land, Poland (ML Polonia) + -ium Word lists with polonium chemical
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更新时间：2025/1/7 4:39:25