relief sewer是什么意思

用法例句

The overflow sewer treatment facility is the main method in controlling the combined sewer overflows(CSOs),and flow-field distribution in the sedimentation tank is the key factor of successful operations.

合流制溢流污水处理装置是控制溢流污染的主要措施,而沉淀池的流态是决定其运行效果的关键因素。