中文说明：
能量谱分析计算,处理信号的时频分析，利用最小二乘算法实现对三维平面的拟合。
English Description：
Energy spectrum analysis and calculation, processing signal time-frequency analysis, using the least square algorithm to achieve the three-dimensional plane fitting.
Using the least square algorithm to realize the three-dimensional plane fitting
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中文说明：
能量谱分析计算,处理信号的时频分析，利用最小二乘算法实现对三维平面的拟合。
English Description：
Energy spectrum analysis and calculation, processing signal time-frequency analysis, using the least square algorithm to achieve the three-dimensional plane fitting.
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