The power spectrum density (PSD) function is important in gust load flight experiment data analysis.

功率谱密度（PSD）函数在阵风载荷飞行试验数据分析中占有重要的地位。

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Then, a sequence of half-cycle is drawn from the matrix to construct a flight by flight random load spectrum.

然后从矩阵中抽取半循环序列，构成飞-续-飞随机谱。

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Then, a sequence of half-cycle is drawn from the matrix to construct a flight by flight random load spectrum.

然后从矩阵中抽取半循环序列，构成飞-续-飞随机谱。

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