传输线线上脉波电流之频谱与分布及其各频率成份之辐射远近场型之差异。
The radiation pattern in the near and far field of each frequency component of the spectrum of current pulse on a transmission line.
联合时频分布方法把整体频谱推广到局部频率，根据频率随着时间的变化情况，对信号进行有效的分析。
Generalized into local frequency from integral frequency, the method of joint time-frequency distribution effectively analyzes the signal based on the variation of frequency with time.
当采样频率比较高时，数字化自然采样法的频谱分布与自然采样法的频谱分布类似。
When sampling frequency is quite high, frequency spectrum distributing of digital natural sampling and natural sampling is similarity.
并且根据频谱分析的方法确定了瑞利波的频率分布范围。
The frequency range of R-wave has been determined by use of frequency analysis.
原有声纳系统接收处理后的声音信号经过综合频谱转换后，形成数字化的动态频率-幅度分布曲线。
The sound signal received and processed by the original sonar system is converted by comprehensive frequency spectrum and forms a digitized dynamic frequency-amplitude distribution curve.
结果表明：发动机噪声主要是加性、低强度的连续频谱，在某几个频率成分上也分布着线状频谱。
The results show that the engine noise is additive weak-intensity continuous spectrum or compound spectrum and for some frequencies it is both continuous and linear.
结果表明：发动机噪声主要是加性、低强度的连续频谱，在某几个频率成分上也分布着线状频谱。
The results show that the engine noise is additive weak-intensity continuous spectrum or compound spectrum and for some frequencies it is both continuous and linear.
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