費密子一種如電子、質子或中子等自旋為半整數的基本粒子，具有一種使得不可能有多於一個的粒子佔有任何一個特殊的量子力學態的量子力學對稱性
A particle, such as an electron, a proton, or a neutron, having half-integral spin and obeying statistical rules requiring that not more than one in a set of identical particles may occupy a particular quantum state.
衰變的具有相對較短的壽命而衰變，常用於亞原子粒子
Decaying with relatively short lifetime. Used of subatomic particles.
輻射塵以這種方式落下的放射性粒子
The particles that descend in this fashion.
原子里的粒子極小。
The particles in an atom are infinitely small.
