S function was the best model in the fitting between stand density and age.
密度与林龄的拟合以S函数为最优模型。
Actually photoelectron density is the function of electron speed.
事实上光电子数密度是光电子速度的函数。
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。
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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