几种氡的同位素的放射性气体，是放射性物质衰变的产物。
Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
氡容易离子化，这让人期望，该元素有最广泛的化学反应，但是，这个元素最稳定的同位素也极不稳定，这使氡的研究受到了严重的约束。
Although the easier ionization of radon leads one to expect the most extensive chemistry for that element, the high instability of even the most stable isotope has severely limited studies of it.
西姆斯使用放射性计时器测定并比较氡的两种同位素，以此来解密火山的活跃程度。
Sims USES radioactive clocks to decipher volcanic processes, measuring and comparing two isotopes of radon.
介绍了使用同位素测氡法探测煤矿自燃火源位置的原理及应用效果。
The principle and efficiency in application of detecting the position and extent of spontaneous combustion with isotopic radon measurement technique(IRMT) in coal mines are introduced.
锕射气氡的一种放射性的，惰性的和气态的同位素，其半衰期为3。92秒。
A radioactive, inert, gaseous isotope of radon, with a half - life of3.92seconds.
锕射气氡的一种放射性的，惰性的和气态的同位素，其半衰期为3。92秒。
A radioactive, inert, gaseous isotope of radon, with a half - life of3.92seconds.
应用推荐