Radon is the daughter of radium.

氡是镭的子体。

Before broaching the subject of this lecture, I should like to recall that the discoveries of radium and of polonium were made by Pierre Curie in collaboration with me.

在开始讨论这次演讲的话题之前，我还回忆一下，镭钋发现是皮埃·居里与我合作完成的。

We mainly producing in golf radium simulator, gradienter simulator of golf club, velometer of golf club, bags of golf balls and clothes, golf shoes, golf hats and other relative products.

主要产品高镭射练习器、高挥杆水平仪练习器、高挥杆测速器、高毬具包、高物包、鞋、帽子等相关产品。

We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.

我们发现沥青铀矿物中至少含有两种放射性物质：与铋伴生的命名为钋，与钡伴生的命名为镭。