Continuously readjusting the grade limit value(classical domain and joint domain) of every factor can maximize the ratio of historical runoff to actual runoff production in a drainage basin.

通过反复调整各因子的等级分界值（经典域和节域），可以使流域产流计算等级和实际等级的拟合率达到最大，其结果比较好。

youdao

During the runoff, the number ratio of small particles is gradually increased.

随着径流过程中的进行，径流中小颗粒数目比例会逐渐上升。

youdao