| 释义 |
radioactive decay【化】 放射性衰变【医】 放射性衰变 radioactive decay radioactive decay n.（名词）Spontaneous disintegration of a radioactive substance accompanied by emission of ionizing radiation in the form of particles and gamma rays.放射性衰变：放射性物质的自发的分裂，伴随有放出微粒或r射线形式的电离辐射 |