Also the design and calculation of their water drainage system are added.
介绍绿地、花坛的构造、排水系统的类型以及排水系统的设计计算方法。
Water, Power, Gas, Heating system, Drainage, Communication and Flatted land are available.
水，电，气，热力，通讯，污水处理，场地平整等设施完备。
The unique drainage system design, prevent the rain water and dust entering.
独特排水系统设计，防止风吹造成雨水和灰尘的进入。
The unique drainage system design, prevent the rain water and dust entering.
独特排水系统设计，防止风吹造成雨水和灰尘的进入。
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