英语词汇polonium的读音、翻译及短语词组释义-英汉双解词典

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单词	polonium
释义	polonium[pə'ləuniəm]n. 钋【化】钋Po【医】钋(84号元素) polonium po.lo.ni.um AHD: [p…-l½“n¶-…m] D.J. [p6l&ni8m]K.K. [p6loni*m]n.Symbol Po （名词）符号 Po A naturally radioactive metallic element, occurring in minute quantities as a product of radium disintegration and produced by bombarding bismuth or lead with neutrons. It has 27 isotopes ranging in mass number from 192 to 218, of which Po 210, with a half-life of 138.39 days, is the most readily available. Atomic number 84; melting point 254&9{=}C; boiling point 962&9{=}C; specific gravity 9.32; valence 2, 4.See table at element 钋：一种具有天然辐射性的金属元素，作为镭分裂的产物以极小量出现，可通过用中子轰击铋或铅获得。它从192到218的质量数中可排列为27种同位素，其中的钋210半衰期达138.39天，是最易得到的同位素。原子序数84；熔点254&9{=}C；沸点962&9{=}C；比重9.32；化合价2, 4参见 element语源:From Medieval Latin Pol½nia [Poland] 源自中世纪拉丁语 Pol½nia [波兰]
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