短語(yǔ)詞組短語(yǔ)spectrum -density 譜密度response spectrum power density 響應(yīng)功率譜spectrum energy density 能量密度頻譜static power spectrum density 靜態(tài)功率譜Power Spectrum Density MASK 功率譜密度模板noise power spectrum density 噪聲功率譜密度Power Spectrum Density Function 功率譜密度函數(shù) 返回 spectrum density