The comparisons of analytical solutions of the model with numerical simulations of the nnlse show that the model is of excellent accuracy in the case of strong nonlocality and is still valid even if the characteristic length of the material response function approaches about three times of the total spatial extent occupied by the two beams 数值解与解析解的比较结果显示:在强非局域条件下我们所获得的nnlse的简化方程是十分精确合理的;当介质响应函数的特征宽度约为光束所占空间尺度的3倍时,我们推导的简化方程依然适用。