polonium tetrachloride四氯化钋;翻译
polonium-钋
eka polonium类钋
radioactive polonium放射性钋
polonium compound钋化合物
polonium dioxide翻译
polonium cas钋
polonium-beryllium source钋铍〔中子〕源
Discovered radium and polonium发现镭和钋
N（名词） 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 钋