之前後座力會讓整個炮架後移，拉回來後要重新瞄準。管退讓炮架不動，後坐力作用在炮管彈簧上，自動回複。

來源: pop4 於 2024-12-02 14:09:42 [舊帖] [給我悄悄話] 本文已被閱讀：次

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