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基于Ｂｏｕｓｓｉｎｅｓｑ理论，考察了一个入射波进入缓变地形的浅水区域后，波振幅随空间的变化规律，得到了带有非线性恢复力的变系数Ｄｕｆｉｎｇ方程，为浅水波的研究又提供了一个重要工具．
Based on the Boussinesq theory, the variation coefficient of wave amplitude with space is obtained after entering a shallow region with a slowly changing terrain. The variable coefficient Dufing equation with nonlinear restoring force is obtained and provides an important study for the shallow water wave tool.