The greater the amplitude change of head wave of transverse velocity is, the severer the damage is, the later the arriving time of the first wave hollow and the longer the damaged element will be.
当脉冲作用点在受损单元的起始位置时，脉冲作用点横向速度波首波波幅变化越大，损伤越大，脉冲作用点横向速度波的第一个波谷到达时间越晚，损伤单元越长。
The wave velocity test of longitudinal and transverse waves in the construction site was one of the in-situ testing methods that was effective in engineering investigation in recent years.
工程场地纵、横波波速测试是近年来在工程勘察中取得一定效果的原位测试方法之一。
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