Relative frequency density 相对次数密度
frequency density function 频率密度函数
frequency density polygon 频率密度折线图
mean carrier frequency density 平均密度
the time-domain frequency density function 时频密度函数
Keyword Density and Frequency 密度和频率
very low frequency power density 极低频功率密度
double frequency spectral density function [电子] 双重频率谱密度函数
frequency and density 频谱与密度
Clear skies are detected firstly by peak frequency density of ratio (PFDR) method.
首先采用比值概率密度峰值法，初步选出晴天时刻。
Friedman's pricing formula takes into account square footage, cleaning frequency, and "population density."
Friedman的服务价格将面积，频率，甚至“人口密度”都计算在内。
The measurement error of differential absorption laser radar caused by the shift of its center frequency in measuring atmosphenc density has been discussed particularly.
详细地讨论了微分吸收激光雷达测量气体密度时中心频率的漂移所引起的测量误差。
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