sewer systems

同根派生

One of the latest casualties is the sewer system of Jefferson county, Alabama.
最近的一个受害者是阿拉巴马州杰弗逊县的下水道系统。
Do not allow the drain line to empty directly into a drainage ditch, sewer system, or sump.
不要让排放管道直接排放到排放坑、污水管道系统或污水坑内。
It became necessary to provide drainage or sewer systems to carry such wastes away from the area.
提供排水系统或污水管道系统，把废物排出市区已成为必要。
Today, in most large cities, water is used only once and then discharged into a sewer system.
今天，在许多大城市里，水仅被利用了一次后就被排放到了下水道里。
Sewage pipe flow is hypothesized as single-phase and uniform flow,and we are used to applying the Chezy formulas for designing sewer systems.
目前的污水管道设计是将污水在管道内的流动视为单相均匀流，主要用谢才(Chezy)公式进行水力计算。