This form of radiation is often released when electrons transition from an unstable excited state, to a more stable state that has a lower energy.
当电子从不稳定的激发态跃迁到能量较低的更稳定态时，通常会释放这种形式的辐射。
英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。