Through the compare we can draw a conclusion that the gray forecasting precision is the best, the exponential curve method is the second best, and the logarithmic curve method is the worst.

通过比较说明：灰色预测精度最高，指数曲线法次之，对数曲线法最低。

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In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced.

文章给出了绘制开环系统对数相频特性曲线的简便方法。

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Finally adopts the method of curve fitting to do the logarithmic spiral fitting, and then do a comparative analysis with the standard components after fitting the curve.

最后采用曲线拟合的方法进行对数螺旋线拟合，拟合出曲线后，与标准零件进行比较分析。

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