radioactive decay

名词 radioactive decay:

1. the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
   同义词：decay, disintegration

1. Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
   射气几种氡的同位素的放射性气体，是放射性物质衰变的产物
2. The immediate product of the radioactive decay of an element.
   继承元素某种元素放射性衰变的直接产物