若要对产品中各组件在各种运作下的特性进一步了解，还会使用时频(Time-Frequency)的数值分析方法 (如FFT, HHT, enhance-Morlet Transfer..
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瞬时频率 [通信] instantaneous frequency ; instantaneous frequencies
实时频谱分析仪 RTSA
时频分布 TFD ; CTFR ; STFDs
实时频谱分析 RTSA ; real time spectral analysis
时频调制 ST-TFSK ; time-frequency modulation ; FTSK
联合时频分析 JTFA ; joint time frequency analysis
瞬时频率稳定度 instantaneous frequency stability
即时频谱分析仪 RTSA
实时频谱防护 RTSG
Next, time-frequency imaging is utilized to study the conductor objects.
第三，对导体目标的时频成像做了研究。
参考来源 - 微波成像的算法研究In this thesis, the art of temporal arrangement of events in the novel is anatomized and investigated in respect to temporal order, temporal frequency and temporal duration.
本论文从时序、时频和时值三个方面剖析研究了这部小说中事件的时间安排艺术。
参考来源 - 论约瑟夫·海勒《第二十二条军规》中事件的时间安排艺术·2,447,543篇论文数据，部分数据来源于NoteExpress
现在我们有了信号的一个时频表示。
Now we have a true time-frequency representation of the signal.
教练在比赛即将结束时频 繁的轮换球员.
the coach rotates his players frequently near the end of the game. ;
时频分析方法已经在许多领域得到了应用，而且都取得了良好的效果。
Time-frequency analysis method has been applied in many fields, and it acquires a great of achievements.
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