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。
Duplication within a single source or across sources as found through either a frequency distribution or a record linkage indicates that a consolidation is needed for presentation of the data.
通过频率分布或记录链接发现的单个源内或跨多个源的重复表示，需要通过合并来提供数据。
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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