flow concentration in river net

例句：

1. 1.The river flows through the city, carrying a high concentration of pollutants.
   这条河流穿过城市，携带着高浓度的污染物。
2. 2. The study found that the flow concentration in river nets can significantly reduce the amount of sediment carried by the water.
   研究发现，河流网中的流动浓度可以显著减少水中携带的沉积物量。
3. 3.The engineer designed a new filter to remove the flow concentration from the river net.
   工程师设计了一种新的过滤器，用于从河流网中去除流动浓度。