降雨后，水文者需要收集降雨资料，然后分析这阵雨的特征，但计算量比较复杂。本程序只需要用户输入降雨数据，然后自动等时距计算雨量和画各种降雨特征图-After rainfall, hydrologist need to collect rainfall data and then analyze the characteristics of the showers, but the calculation is more complicated. This procedure only requires the user to input the rainfall data,　then automatically calculate and draw a variety of rainfall characteristics figure