Typical examples including solutions of KdV equation, Sine-Gordon (SG) equation, nonlinear Schr?dinger equation (NLS) and mKdV equation are given.

• 举KdV方程、正弦 Gordon方程 (SG方程 )、非线性薛定谔方程 (NLS)及mKdV方程为典型实例 .