spectro photometry

例句：

1. 1. The study of spectra is essential for understanding the chemical composition of stars.
   研究光谱对于理解恒星的化学成分至关重要。
2. 2.Spectrophotometry is a technique used to measure the absorption of light by substances in solution.
   分光光度法是一种用于测量溶液中物质对光吸收的技术。
3. 3. In this experiment, we will use spectrophotometry to analyze the color of different samples.
   在这个实验中，我们将使用分光光度法来分析不同样品的颜色。