单词：spontaneous emission
spontaneous emission的用法和样例：
例句
- Spontaneous photons initiate stimulated emission and the chain reaction begins.自发发射的光子引起受激发射，开始了链式反应。
- Spontaneous emission can be modified through controlling the Rabi frequency of the driving field.通过改变驱动场的拉比频率可以达到控制原子自发发射的目的。
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