radium

[化学] 镭（88号元素符号Ra）英释中释na white metal that is radioactive and is used in the treatment of diseases such as cancer . It is a chemical element : symbol Ra

1 Madame Curie discovered radium..居里夫人发现了镭。

2 The radiation radius of the radioactive radium radiator in the stadium is variable..放射性的镭暖气装置的辐射半径在体育场是易变的。

3 Madame Curie was the physicist with expertise in chemistry that, in 1898, discovered the radioactive substances of radium and polonium in Paris, France..居里夫人是一位具有化学专门知识的物理学家。 1898年，她在法国巴黎发现了放射性物质的镭和钋。