名词
中文翻译：自发发射
同义词：
['spontaneous discharge', 'spontaneous emission']
例句：
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1. Thescientist discovered a new type of spontaneous firing in the experiment.
科学家在实验中发现了一种新的自发发射现象。
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2. The device is designed to produce spontaneous firing without external power.
该设备设计用于产生自发发射，无需外部电源。
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3. The researcher found that the spontaneous firing was related to the chemical composition of the material.
研究者发现自发发射与材料的化学成分有关。