A.5%~10% B.10%~15% C.10%~20% D.15%~20%
A.20%,10% B.10%,20% C.10%,15% D.15%,10%
A.分流量級(jí)綜合B.分水位級(jí)綜合C.分季節(jié)D.按測(cè)流方案分別