Design of drain 基本例句 排水设计 Make an Approach to Water Supply and Drainage Design of Residence.住宅给排水设计探讨。 Design storm hyetograph is the essential element for hydrologic modeling analysis and storm water drainage design.摘要设计暴雨雨型对水文模式分析与暴雨排水设计是不可或缺的基本要素。