track irregularity spectrum
3-D power spectrum density PSD
instantaneous power spectrum density
Power spectrum density
功率谱密度
功率频谱密度
功率谱密度函数
信号功率谱密度
功率谱
谱密度
自功率谱
power spectrum density function
power spectrum density peak method
Road surface power spectrum density
stationary power spectrum density
Railway Track Irregularity
absorption power density
acoustic power spectrum control
Acoustical power spectrum
annual average wind power density
Auto-regressive power spectrum
Available wind power density