The existing urban drainage system is hereby introduced, including the combinedflow and separate flow systems.
阐述了现有城镇排水系统的排水体制，并着重介绍了合流制排水体制和分流制排水体制。
2
And not wimpy Mississippi-scale floods, either: just one of them could equal the combinedflow of all the planet's rivers.
它们不似密西西比河那般柔弱无力，仅仅其中的一条洪流就相当于地球上所有河流的总和。
3
The experiment has proven that, after parameter optimization, the valve combinedflow region has been expanded and the min. steering flow increased resulting in obvious energy-saving effect.