Constructing new exact solutions to nonlinear difference-differential equations by Riccati equation
用Riccati方程构造非线性差分微分方程新的精确解

A method for combining Riccati equation with function transformation is applied to seek exact solutions to the nonlinear difference-differential equations. And new exact solitary wave solutions and triangular function solutions to modified Volterra equation and general lattice equations are obtained with the help of symbolic computation system Mathematica.