美国在二战中，生产了三十万架作战飞机，训练几十万飞行员，航校飞行训练就牺牲一万五千人。二十一世纪无人机大战，规模要上十亿

来源: thore 于 2024-10-28 06:21:54 [旧帖] [给我悄悄话] 本文已被阅读：次

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