sanitary chemical analysis

例句：

1. 1. The sanitary chemical analysis of the wastewater is crucial for environmental protection.
   废水的卫生化学分析对于环境保护至关重要。
2. 2. The sanitary chemical analysis of the wastewater is crucial for environmental protection.
   废水的卫生化学分析对于环境保护至关重要。
3. 3. The sanitary chemical analysis of the wastewater is crucial for environmental protection.
   废水的卫生化学分析对于环境保护至关重要。