polonium
音標[p?'l?uni?m] 讀音漢語翻譯
n. 釙
【化】 釙Po
【醫】 釙(84號元素)
詞型變化：
簡寫符號:Po英文解釋：
名詞 polonium:
- a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor同義詞：Po, atomic number 84
詳細解釋：
po.lo.ni.um
n.Symbol Po （名詞）符號 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 92 to 28, of which Po 20, with a half-life of 38.39 days, is the most readily available. Atomic number 84; melting point 254=C; boiling point 9'2=C; specific gravity 9.32; valence 2, 4.See table at element 釙：一種具有天然輻射性的金屬元素，作為鐳分裂的產物以極小量出現，可通過用中子轟擊鉍或鉛獲得。它從92到28的質量數中可排列為27種同位素，其中的釙20半衰期達38.39天，是最易得到的同位素。原子序數84；熔點254=C；沸點9'2=C；比重9.32；化合價2, 4參見 element
來源：From Medieval Latin Polônia [Poland] 源自 中世紀拉丁語 Polônia [波蘭]
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