名词
中文翻译：首次荧光
同义词：
['first order luminescence', 'first-order emission']
例句：
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1. The firstorder fluorescence of the sample was observed at a wavelength of 450 nm.
样品的首次荧光在波长为450纳米时被观察到。
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2.In the study of quantum mechanics, first order fluorescence is used to measure the energy levels of atoms and molecules.
在量子力学研究中，首次荧光用于测量原子和分子的能量级。
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3. The researchers found that the first order fluorescence spectrum of the sample showed a significant peak at 450 nm.
研究人员发现，样品的首次荧光光谱在450纳米处有一个显著的峰值。