送交者: coubert 于 2007-06-19, 11:10:35:

回答: neither. It is a form of shock wave, called moving shock. 由 steven 于 2007-06-19, 11:05:54:

• moving shock is one kind of shock wave dealing with explosion. (无内容) - steven (0 bytes) 2007-06-19, 11:15:46 (147738)

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