recording spectrometer

例句：

1. 1. The recording spectrometer was usedto analyze the chemical composition of the sample.
   记录光谱仪被用来分析样品的化学成分。
2. 2.The spectrometer is capable of measuringthe absorption and emission spectra of materials.
   该光谱仪能够测量材料的吸收和发射光谱。
3. 3.The spectrometer was used to studythe molecular structure of the compound.
   该光谱仪被用来研究化合物的分子结构。