Dondon82
2020-11-18T04:54:39+00:00
刚刚看到的一个视频，在水下发射步枪弹，发射后迅速失稳，这都正常，还有子弹出膛就破碎成两瓣，但是为什么有的子弹像是被锤子在后面敲了一锤那样，变成扁的了，这是受到了什么力的影响？
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