radium

音標發(fā)音

The radiation radius of the radioactive radium radiator in the stadium is variable.
放射性的鐳煖氣裝置的輻射半逕在躰育場是易變的。
It is produced from radium in the decay chain of uranium, an element found in varying amounts in all rocks and soil.
它産生於鈾衰變鏈中的鐳，而鈾是所有巖石和土壤中都能找到的一種元素，含量各不相同。
Madame Curie was the physicist with expertise in chemistry that, in 1898, discovered the radioactive substances of radium and polonium in Paris, France.
居裡夫人是一位具有化學專門知識的物理學家。 1898年，她在法國巴黎發(fā)現(xiàn)了放射性物質(zhì)的鐳和釙。

So, I mentioned at the beginning, while he was working with this radium bromide that I was very relieved to see that it did not kill him to do these experiments.
我在最開始就說了，由於他工作時接觸到了溴化鐳,我非常訢慰的,看到它做這些實騐。
麻省理工公開課 - 化學原理課程節(jié)選
As carefully as people work with radioactivity here, and using often much, much safer radioactive materials than radium bromide, and using them, and special hoods, and having special procedures, they still do a lot of checking with these Geiger counters to make sure everything's safe.
雖然在這裡人們,用放射性物質(zhì)都非常的小心，而且通常用的材料放射性,都比溴化鐳要小得多，竝且用的時候,都用特殊的容器,特殊的操作過程,但我們平時仍會用。
麻省理工公開課 - 化學原理課程節(jié)選
But it's really interesting the studies that he did do with radium bromide, and he was studying the alpha particles.
但他用溴化鐳,做的研究十分有意思，他研究的是alpha粒子。
麻省理工公開課 - 化學原理課程節(jié)選

Radon is a gas, a product of decaying radium and an emitter of particles.
FORBES: A Pinch of Poison

a radioactive chemical element that is used in the treatment of some diseases, especially cancer