中文说明：做的一个关于水网解算的小程序，用的是把非线性方程转化为线性方程的思想去解决的，-Does a solver on the water network of small procedures, using the nonlinear equations into linear equations to solve ideological and
English Description：
Does a solver on the water network of small procedures, using the nonlinear equations into linear equations to solve ideological and