严格说来,所有的模拟时变信号。
Strictly speaking, all signals are analog time-varying signals.
带宽说明了仪器在某一频率范围内响应时变信号的能力。
Bandwidth describes the instrument's ability to respond to time varying signals over a range of frequencies.
提出了基于变时基短时傅里叶变换来分析和处理时变信号的技术。
Measuring and analyzing technology based on variable-time-interval Fourier transform was dealt with for vehicle accelerating noise signal.
So this is not a very positive sign and people are having a bad relationship with food.
这不是个正面的信号,人们和食物之间的关系变糟
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