名词
中文翻译：自发发光体
同义词：
['spontaneous emittingsource', 'spontaneous emitter']
例句：
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1. The spontaneous emission of light fromthe radioactive material is a fascinating phenomenon.
放射性物质自发发光的现象非常迷人。
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2. The spontaneousemission of light from this device is dueto its unique design.
这种设备的自发发光是由于其独特的设计。
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3. The spontaneous emission of lightfrom the surface of the sun is responsiblefor its brightness.
太阳表面自发发光是其亮度的原因。