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研究了一个ENSO海-气时滞振子模型.利用同伦分析方法,得到了该模型解的近似展开式,通过与特殊情况下的精确解比较,得到的二级近似解具有较高的精度.
A ENSO sea-gas oscillator model is studied. By using the homotopy analysis method, the approximate expansion of the model solution is obtained. The second-order approximate solution obtained by comparison with the exact solution under special conditions has higher accuracy.