With the equivalent medium theory, the dispersion curves are worked out to demonstrate the effects of damping on retarded mode.

应用等效介质理论进行求解，色散曲线揭示了阻尼对推迟模式的影响。

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According to seismic coherent body, this paper predicts distribution of fractures, USES equivalent medium theory, and establishes geologic model.

根据地震相干体，预测出裂缝的分布，引入等效介质理论，建立了地质模型。

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