1.
A Multi-channel Time-frequency Comparison System Based on FPGA
基于FPGA的多通道时频比对系统研究
2.
Research about the Comparison between "Dong Bu Dong" and "Jing Chang";
时频副词“动不动”与“经常”对比研究
3.
The Relation and Its Application Between Time Interval Measurement and Phase Comparison in the Process of Time Comparison
时间比对中时间间隔测量与频率源比相的关系及其应用
4.
These can also be very useful when navigating time-based documents, such as video and audio.
它对于和时间有关的文档非常有用，比如视频和音频文档。
5.
COMPARISON OF ADAPTIVE TIME-FREQUENCY ANALYSIS METHODS FOR EARTHQUAKE WAVES
地震波的自适应时频分析方法对比研究
6.
ratio of carrier-to-interfering signal
载频信号对干扰信号比
7.
Comparison between Analog and Digital Processing Method in Time and Frequency Measurement;
模拟和数字处理方式在时频测控领域中的比对研究
8.
The comparison of frequency-domain Method and Time-domain Method in Low RCS Target Measurement
频域变换与时域提取法在低RCS目标测量中的对比
9.
THE COMPARATIVE STUDY AND APPLICATION OF SEVERAL TIME-FREQUENCY ANALYSIS METHODS IN THE COAL FIELD
几种时频分析方法对比及在煤田地震勘探中的应用
10.
Comparison about Flood Frequency Analysis on Different Time Scales in Jinghe River Channel
泾河流域不同时间尺度洪水序列频率分析对比研究
11.
A Method of Log Data Time-frequency Characteristics Stratum Correlation and Its Application
利用测井资料时频特征进行地层对比的方法及其应用
12.
A Comparison of High Power UPS Working-frequency Machine and High-frequency Machine
大功率UPS工频机和高频机性能对比
13.
simultaneous color contrast
同时色对比 同时色对比
14.
Instantaneous frequency estimation of frequency modulation signals in low signal noise ratio
低信噪比情况下调频信号的瞬时频率估计
15.
Performance Comparison of Frequency Standard Measurement Systems Based on Beat-Frequency Method
基于差拍的频标比对系统的性能比较
16.
The average daily minutes viewed for an audience, either by a specified channel or time band.
观众日平均收视时间（钟）总体电视推及人口的比值，可针对特定频道或时段进行计算。
17.
Time permutation and phase rotation for OFDM peak-to-average power ratio reduction
利用时频二维处理降低OFDM系统峰均比
18.
Effects of Frequency Relative Timedelay on HF High Speed FH System
频率相对时延对短波高速跳频系统的影响