spectroscopic methodology

例句：

1. 1. The new instrument is designed to analyze the spectra of molecules.
   新仪器被设计用来分析分子的光谱。
2. 2. Spectroscopy is a branch of chemistry that deals with the study of spectra.
   光谱学是化学的一个分支，研究光谱。
3. 3. The scientist used a spectroscope to observe the spectrum of the star.
   科学家使用一台光谱仪来观察那颗星的光谱。