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本文绘出了一个在计算平均重力异常中简单易算的平滑因子公式，并将其与Ｃｏｌｏｍｂｏ最佳平滑因子进行了比较，获得了两者具有相同精度的结论；再将其与直接积分得到的相应因子进行比较，结果表明：在我国范围内计算平均重力异常的误差小于１毫伽。
In this paper, a smoothing factor formula that is simple and easy to calculate in calculating average gravity anomaly is plotted and compared with the best smoothing factor of Colombo, and the conclusion that the two have the same precision is obtained. The corresponding factors are compared. The results show that the error of calculating the average gravity anomaly in our country is less than 1 milligram.