毛澤東年代軍用步槍槍管生鏽和磨損過快一直困擾著軍隊，原因是特種鋼技術不過關和脫硫技術的不過關。

來源: man008 於 2022-11-25 12:03:12 [舊帖] [給我悄悄話] 本文已被閱讀：次

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