独立计量分区截断管水质时空变化规律
陈达,柳景青,陈环宇,王若玮

Spatiotemporal change rules of water quality in cut-off water pipelines in district metering areas (DMA)
Da CHEN,Jing-qing LIU,Huan-yu CHEN,Ruo-wei WANG
图 2 球墨铸铁管道内壁现场图
Fig.2 Photos of ductlie cast-iron pipe inner surface