| 释义 |
放射线fàngshèxiàn某些元素(如镭、铀等)的不稳定原子核衰变时放射出来的有穿透性的粒子束。分为甲种射线、乙种射线和丙种射线,其中丙种射线贯穿力最强。{radioactive rays; penetrating stream of particles given off by the spontaneous disintegration of atoms of certain radioactive elements (e.g. radium, uranium, etc.); α-, β-and γ-rays, the last form having the most penetrating capabilities} |