平射炮的空爆弹怎么在经过战壕上空时引爆？榴弹炮可以用无线电引信控制在一定高度起爆，平射炮的弹道是平的

来源: 天青水蓝于 2023-02-02 20:04:55 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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