The mean blood velocity was estimated using the proposed method with a relative error of 5.62%, which demonstrated improved accuracy compared to 12.83% by using the high-pass filtering method.

实验中得到了与实际更接近的平均流速估计，相对误差仅为5.62%，与滤波法的相对误差12.83%相比，准确性得到了一定的提高。

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The relative error of annual mean evaporation is less than 4%.

年平均蒸发量相对误差小于4％。

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The root mean square relative error, mean absolute relative error and maximize absolute relative error of SVM model generalization performance are 1.06%, 0.96% and 1.16%, respectively.

对SVM多元非线性回归泛化性能进行测试，其均方根相对误差为1.06%，平均绝对相对误差为0.96%，最大绝对相对误差为1.16%。

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