flow concentration meaning in English

汇流
集流

Design and development of the experimental system of runoff - producing and flow concentration of city underlying surface
设计并研制了城市下垫面降雨产汇流实验系统。
Thus it is very difficult to calculate the spill volume and water quality because they involve many processes such as rainfall , yield runoff of rainfall 、 flow concentration of surface runoff , ground pollutant build up 、 washout , the flow concentration of combined drainage system and cso
其中,合流制排水系统的溢流水量、水质的确定涉及到降雨,地面产流、汇流,地表污染物的累积、冲刷,污水在管渠中的汇流以及溢流等多种因素,采用一般方法很难定量计算。
At last , on the basis of analyzing the characteristics of rainfall and runoff - producing and flow concentration and taking the example of multiple - underlying surface of jing hua school area and stressed laboratory building materials of hydrology and environment of shann ' xi , and thus rainfall runoff amount in the cultural areas and roof underlying surface are calculated , and utilizing foreground of rainfall are analyzed
最后，在对降雨特性、下垫面产汇流特性分析的基础上，以西安理工大学金花校区和陕西省水资源与环境重点实验室屋顶为典型小区，简单的计算分析了西安市文化区和屋顶下垫面的降雨径流量。从量的角度分析了雨水利用前景。