在深海水域，海啸的传播速度像喷气式飞机一样快，但在海面看到的波浪不大。
Tsunamis travel as fast as jet aircraft in deep water, where they are spread over a far deeper water column and make for smaller and very gradual waves at the surface.
在输电线路行波测距中，存在行波浪涌到达时刻与行波传播速度相互配合的问题。
In the transmission line fault locating based on travelling wave, the arrival time of travelling wave must coordinate with the travelling wave velocity.
在输电线路行波测距中，存在行波浪涌到达时刻与行波传播速度相互配合的问题。
In the transmission line fault locating based on travelling wave, the arrival time of travelling wave must coordinate with the travelling wave velocity.
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