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原创 二战德国凶狠的小口径高射炮,没能完成换代工作的MK 303
在二战爆发前,德国的小口径防空炮选择了20毫米、37毫米两种口径,尽管这是当时国际上的主流选择,但德国军方认为应该研制介于这两者之间的自动炮,这样才能在威力和重量之间做到平衡,于是便有了研制30毫米自动炮的想法。
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