radioactive

• The rate at which radioactive elements disintegrate varies from one element to another .
  放射性元素的衰变速度随元素种类的不同而不同。
• The inferno spewed a deadly plume of radioactive isotopes into the atmosphere .
  这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层。
• The transmutation of the elements was no longer the privilege of the radioactive substances alone .
  元素的衍变不再是放射性物质独具的特点。
• Alpha particles are positively charged helium nuclei obtained from natural radioactive decay .
  粒子是从天然放射性蜕变得到的带正电的氦核。
• If high-level radioactive wastes are deposited underground, high temperatures may develop .
  如果把高强度放射性废料埋在地下，就可能产生高温。
• This is considerably less than the height attained by the radioactive cloud in an air burst .
  这比在空中爆炸中原子云所能达到的高度要低得多。
• The decomposition of a radioactive element is the simplest example of a true first order reaction .
  放射性元素的衰变是真正一级反应最简单的实例。
• By that time, the radioactive cloud had thinned out to such an extent that it was no longer visible .
  那时，放射性云已稀释到再也看不见的程度了。
• A living organism would take in the radioactive carbon and convert it to organic material .
  有生命的有机体会吸收具有放射的碳，并把它转化为有机物质。
• Since the pioneer days of the curies, many more radioactive substances have been discovered .
  自居里夫妇的开创性时代以来，已经发现许多其他放射性物质。