infra-red sepectrometry

例句：

1. 1. The infra-red spectroscopy technique is used to analyze thechemical composition of materials.
   红外光谱技术用于分析材料的成分。
2. 2. Infrared spectrophotometry is a powerful tool for measuringthe concentration of pollutants in water.
   红外光谱光度法是一种测量水中污染物浓度的强大工具。
3. 3. The infra-red spectrometer was used to identifythe different types of minerals in the soilsample.
   红外光谱仪被用来鉴定土壤样本中不同种类的矿物质。