然后记录下的是横向波的到达。

The second marks the arrival of transverse vibrations.

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强度最大处位于飞机正下方，随着离飞行路线的横向距离的增大强度不断减小，直到因为冲击波在地面的折射而消失。

Maximum intensity is directly beneath the aircraft, and decreases as the lateral distance from the flight path increases until it ceases to exist because the shock waves refract away from the ground.

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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 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.

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