spectroscopic analysis

例句：

1. 1. The study of thespectrum is crucial for understanding the chemical compositionof materials.
   研究光谱对于理解材料的成分至关重要。
2. 2. Spectroscopy has been used toanalyze the molecular structure of organic compounds.
   光谱学已被用来分析有机化合物的分子结构。
3. 3. In spectroscopy, theabsorption or emission of light by a sampleis measured to determine its properties.
   在光谱学中，通过测量样品对光的吸收或发射来测定其性质。