单词：pair annihilation
pair annihilation的用法和样例：
例句
- 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。
- 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。
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