The NADM is improved and an optimum nearly analytic discrete method (ONADM) is presented in this study.

为此，本文提出了一种改进的近似解析离散化方法(ONADM)。

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Numerical results show that ONADM can effectively preserve the information of the wave fields by suppressing numerical dispersion and improving numerical accuracy and efficiency.

数值实验表明ONADM算法可以更有效地保留波场信息，压制数值频散，提高计算的精度和效率。

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