... 均方根谱密度 (RMS Spectral Density) 能量谱密度 (ESD，Energy Spectrum Density) 相干函数 (Coherence Function) ...
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信号的频率特性通常包括四种，即频谱(Spectrum)、频谱密 度(Spectrum Density)、能量谱密度(Energy Spectrum Density)和功率谱密度(Power Spectrum Density)。
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energy spectrum density function 能谱密度函数
energy density spectrum 能量密度频谱 ; [物] 能量密度谱
Energy-density spectrum 能量密度谱
cross-energy density spectrum [自] 互能密度谱
spectrum energy density 能量密度频谱
Formulae of energy spectrum density of large wavenumber range in homogeneous isotropic turbulence are given here.
对均匀各向同性湍流提出一个能谱密度的计算公式。
Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.
物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。
Furthermore, the energy density spectrum for electromagnetic wave, Langmuir wave and ion acoustic wave are obtained and used to interpret spectra evolution with time.
研究了电磁波、朗缪尔波与离声波在相互作用中的能量密度谱随时间的演化；
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