FDM (Finite Difference method) is one of the important numeric calculation methods used in Groundwater Gynamics.

有限差分法是一种重要的数值计算方法。

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The results showed that the restraint variable-dimension method not only could have high calculation accuracy and good numeric stability but also have certain data noise control capability.

识别结果表明，约束变尺度方法不仅具有较高的计算精度和良好的数值稳定性，并且具有一定的抑制数据噪音的能力。

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Then its numeric value calculation method is deducted.

然后，推导了光通转移法的数值计算方法。

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