n.正電子
The result is that the electron shadow and the positron shadow are separated. 結(jié)果將使得電子的陰影和正電子的陰影被分開。
The vacancy defects of samples were measured by slow positron annihilation. 借助慢正電子湮沒技術(shù)研究了樣品的空位型缺陷。
