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基于传统的Ｂｏｕｓｓｉｎｅｓｑ方程，通过速度变换及在方程中加入高阶项的方法，给出了进一步改善线性色散关系及变浅作用系数的方程，其线性色散关系及变浅作用系数的精度均为Ｏ（β８）（β＝ｈ０／Ｌ，Ｌ为特征波长，ｈ０为特征水深）．
Based on the traditional Boussinesq equation, the equation of further improving the linear dispersion and the shallowing effect coefficient is given by means of velocity transformation and adding higher-order terms into the equation. The linear dispersion relation and the shallowing effect coefficient are both O (Β8) (β = h0 / L, L is the characteristic wavelength, h0 is the characteristic water depth).