...在增长率可以将实际产出增长分为一个趋势分量(trend component),即我们所说的潜在经济增长率;一个周期性分量(cyclical component),即我们所说的偏离增长趋势的变化分量.
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时域平均法是从混有噪声的信号中提取周期性分量的最有效方法。
The time domain average method is an efficient method to extract period components from the signal mixed with noise.
针对这两方面的问题，提出了一种用全零点数字滤波器滤除周期性分量的滤波算法。
Aiming at these problems, this paper presents an efficient algorithm which use all zero digital filter for filtering the periodic component.
通过时域波形和频谱等基本分析手段来探测振动加速度信号中的周期性冲击分量往往是困难的。
It is difficult to detect the periodic impulse component in the vibration acceleration signal with conventional analysis methods such as time domain wave and frequency spectrum.
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