spectral-chemical analysis

例句：

1. 1.The spectral-chemical analysis of the sample was crucial to the research.
   样本的光谱化学分析对于研究至关重要。
2. 2. The chemical analysis of the soil revealed a high concentration of heavy metals.
   土壤的化学分析显示重金属含量高。
3. 3.The spectral-chemical analysis of the samples provided valuable information for the study.
   对样本的光谱化学分析为研究提供了宝贵的信息。