Ray,Gamma

《英文msh詞典》Ray,Gamma
[入口詞] Ray,Gamma
[主題詞] Gamma Rays
[英文釋義] Very powerful and penetrating,high-energy electromagnetic radiation of shorter wavelength than that of x-rays. They are emitted by a decaying nucleus,usually between 0.01 and 10 MeV. They are also called nuclear x-rays.