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。
Time is only considered as the effect on population density in ordinary model.
常微模型只考虑时间因素对种群密度的影响。
Flicker noise is approximately simulated by power law model of phase noise spectral density.
根据相位噪声功率谱的幂律模型，近似地模拟了相位噪声。
Flicker noise is approximately simulated by power law model of phase noise spectral density.
根据相位噪声功率谱的幂律模型，近似地模拟了相位噪声。
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