positron electron annihilation

• 偶湮没

positron electron annihilation的用法和样例：

例句

1. The vacancy defects of samples were measured by slow positron annihilation.
   借助慢正电子湮没技术研究了样品的空位型缺陷。
2. A photomagnetic positronium annihilation model was proposed to explain the experimental facts.
   提出正电子素光磁湮没模型以解释实验事实。