The frequency response of the transducers is measured experimentally using laser ultrasound and a pulse echo reflecting method. The spectral analysis results are compared and analyzed.
由激光超声方法和自发自收脉冲反射法实验测定了所制作的换能器的频率响应，并比较了频谱分析结果。
The measurement and analysis of the pulsation response and dynamic behavior of tall buildings taking the earth pulse as the vibromotive source is introduced.
介绍利用大地脉动作为激振振源，测试并分析高层建筑的脉动响应信号及动力特性。
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