chemical group composition

例句：

1. 1.The chemical group composition of the sample is very important for its application.
   样品的化学组态对其应用非常重要。
2. 2. The chemical group composition of the soil affects plant growth.
   土壤的化学组态影响植物生长。
3. 3. The chemical group composition of the water can be analyzed to determine its quality.
   可以分析水的化学组态来测定其质量。