mass spectra

例句：

1. 1. The mass spectra of the molecules were analyzed to determine their chemical composition.
   通过分析分子的质谱图，确定了它们的化学组成。
2. 2. The mass spectra of the compounds were used to identify the different elements present in the sample.
   化合物的质谱图被用来识别样品中存在的不同元素。
3. 3.The mass spectra obtained from the experiments were compared with theoretical predictions to validate the model.
   实验获得的质谱图与理论预测进行了比较，以验证模型的准确性。