rain water quality

• 雨水水质

rain water quality的用法和样例：

例句

1. Based on analysis of roof runoff quality in Shanghai, the treatment efficiency by sedimentation and filtration was investigated.
   摘要在分析上海市屋面雨水水质的基础上，研究了沉淀和过滤技术对屋面雨水的回用处理效果。