polonium
- n. [化学] 钋：一种极稀有的强放射性金属元素，化学符号 Po，原子序数 84，天然存在于铀矿石中，也可通过中子轰击铋人工制得；其同位素钋-210 曾用作卫星轻量电源和工业静电消除材料。
网络释义专业释义英英释义
...03年获得 诺贝尔物理奖, 1911年再获诺贝 尔化学奖 1.2 放射性的发现 1898年,居里夫妇协力,终于先后发现放射性 元素钋(Polonium)(放射性比铀强400倍) 镭 (Radium) (放射性比铀强百万倍) ----放射化学由此诞生!
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eka polonium 类钋
polonium compound 钋化合物
radioactive polonium 放射性钋
polonium-beryllium source 钋铍〔中子〕源
Discovered radium and polonium 发现镭和钋
eka-polonium [核] 类钋
Discovery of polonium and Radium 镭与钋的发现者
polonium [ pə'ləuniəm ]
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n.
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
同义词： Po atomic number 84
以上来源于: WordNet
柯林斯英汉双解大词典
polonium /pəˈləʊnɪəm/
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1.
N 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
双语例句原声例句权威例句
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Pierre Curie joined her in the work that she had undertaken to resolve this problem, and that led to the discovery of the new elements, polonium and radium.
皮埃尔·居里和她一起致力于解决这个问题，结果发现了新元素钋和镭。
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In 1898 they discovered polonium and radium.
1898年，他们发现了钋和镭。
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Mr Litvinenko is thought to be the first person to die from acute polonium-210 poisoning.
利特维年科可能是第一个死于急性钋-210中毒的人。
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So, you've got polonium or thorium sitting inside this leaded box with one opening.
把钋或者钍放在,开一个小口的含铅的盒子里面。
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