IR fluorescence

例句：

1. 1.The IR fluorescence of the sample was detected by the spectrometer.
   该样品的红外荧光被光谱仪检测到。
2. 2.The infrared fluorescence spectrum of the sample is shown in the figure.
   样本的红外荧光光谱图在图中展示。
3. 3. The detection of IR fluorescence can help us identify the presence of certain molecules.
   红外荧光的检测有助于我们识别某些分子的存在。