The initial and final parameters of subsonic compaction wave alter continuously. The initial parameters of ultrasonic compaction wave are discontinuous, but its final parameters alter smoothly.

超音速压缩波的初态参数出现间断，但其终态参数却是连续变化的。

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The initial and final parameters of subsonic compaction wave alter continuously. The initial parameters of ultrasonic compaction wave are discontinuous, but its final parameters alter smoothly.

超音速压缩波的初态参数出现间断，但其终态参数却是连续变化的。

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