该程序可用于对河床断面进行概化，在输入断面起点距、高程及水位后，就可以得到河床的平均河底高程、河宽以及水深等结果。-The program can be used to estimate cross-section of the river.After you input the distance, elevation and water level of the section, you can get the average river bed height, width and depth