The strong influence of the degree, location and length of damage on the amplitude and the delaying time of the first wave are analyzed.
分析了各种损伤度，损伤位置，损伤区域大小对波幅，首波延时时间等的影响。
The strong influence of the degree, location and length of damage on the amplitude and the delaying time of the first wave are analyzed.
分析了各种损伤度，损伤位置，损伤区域大小对波幅，首波延时时间等的影响。
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