spectral factorization

例句：

1. 1. The spectrum of light reflected from the surface of the earth is used to determine its temperature.
   地球表面反射的光的光谱用于确定其温度。
2. 2. Spectral analysis is a technique used to identify and quantify the different components of a substance.
   光谱分析是一种技术，用于识别和量化物质的不同成分。
3. 3. In spectroscopy, the spectrum of a substance is studied to understand its chemical composition.
   在光谱学中，研究物质的光谱以了解其化学成分。