power spectral density function [物] 功率谱密度函数
Auto-power spectral density function 自功率谱密度函数
cross-power spectral density function 互功率谱密度函数
probabilistic power spectral density function 概率谱密度函数
power spectral intensity function 功率谱密度函数
self-power spectral density function 自功率谱密度函数
The random rail roughness samples are yielded using random numerical method and power spectral density function.
采用随机数值模拟方法和功率谱密度函数生成随机轨道粗糙度。
The matrix of power spectral density function of fluctuating wind load is established first.
首先建立了脉动风荷载的功率谱密度函数矩阵。
The calculation results using simulated and measured irregularity indicate that the power spectral density function and the simulated method used here can reflect true condition of rail.
同时，采用模拟与实测两种不平顺样本的计算结果表明，本文采用功率谱密度函数的模拟方法可以基本反映轨道的实际不平顺情况。
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