... frequency restoration 频率复原，频率回复 frequency run 频率特性试验 frequency selection 频率选择 ...
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动力试验表明，由于耗能支撑滑动荷载不变，它的顶点最大加速度反应同地震大小及其频率特性无关。
Vibration test shows that the maximum acceleration response at the bracing top is not related to earthquake magnitude and its frequency characteristics since its sliding force remains unchanged.
用伪随机振荡技术测量了高通量工程试验堆（HFETR）不同功率水平时堆的频率特性。
Using pseudorandom oscillation technique, frequency characteristics in different power levels are measured in HFETR.
试验和分析木工平刨床空转和切削时的噪声源、噪声频率特性和各种降噪方法。
Testing and analyzing the noise source of idle run and cutting, noise frequency characters and all kinds of methods for noise reduction for the surface planer were carried out.
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