alpha ray

1. Each emission of an alpha or beta ray accompanies the transmutation of an atom; the energy communicated to these rays comes from inside the atom.
   每一次a射线或b射线的放射都伴随着原子的蜕变，因为赋予这些射线的能量来自于原子的内部。
2. We have studied the relationship between gamma specific activities of natural radionuclides and alpha and beta ray level in building materials used in interior decoration, and the saturated thickness of beta ray from the surface of different materials.
   进行了各类建材表面a、b辐射水平和其天然放射性核素g比活度关系的研究和不同饰材表面b辐射水平的饱和厚度研究。

noun

1. the radiation of alpha particles during radioactive decay

   Synonym:    alpha radiation