grating spectrum

例句：

1. 1. The spectrograph is used to analyze the spectral data of a sample.
   分光计用于分析样品的光谱数据。
2. 2.The scientist used the grating spectrum to identify the chemical composition of the sample.
   科学家使用光栅光谱来识别样本的化学成分。
3. 3.The grating spectrum was used to detect the presence of pollutants in the air.
   光栅光谱被用来检测空气中污染物的存在。