之前后座力会让整个炮架后移，拉回来后要重新瞄准。管退让炮架不动，后坐力作用在炮管弹簧上，自动回复。

来源: pop4 于 2024-12-02 14:09:42 [旧帖] [给我悄悄话] 本文已被阅读：次

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