stable isotope dilution mass spectrometry

例句：

1. 1. The method of stable isotope dilution mass spectrometry was used to analyze the isotopic composition of the samples.
   使用稳定同位素稀释质谱法分析样品的同位素组成。
2. 2. This study utilized stable isotope dilution mass spectrometry to investigate the origin of the waterin the region.
   该研究利用稳定同位素稀释质谱法来探究该地区水源的起源。
3. 3. The results obtained by stable isotope dilution mass spectrometry were consistent with those from other analytical methods.
   通过稳定同位素稀释质谱法获得的结果与其他分析方法得到的结果一致。