radio-frequency presentation 射频显示
time frequency presentation 时频分析
video-frequency presentation 视频显示
time-frequency presentation 时频分析
graphic presentation of frequency distribution 频率分布的图示法 ; 关于次数分配图
A new analysis of frequency hopped sequence based on time frequency presentation is proposed in the paper.
针对跳频信号的非平稳性，提出了基于时频表示的跳频信号分析方法。
Contrast, spatial frequency, presentation time, moving velocity and phase reversal frequency of each grating are controlled independently.
每组光栅的对比度、空间频率、显示时间，移动速度和反相频率能单独控制。
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