waterrool 2017-8-31 09:23
老照片:在伯班克的洛克希德飞机公司[19P]
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vf1920 2017-9-2 14:34
飞机制造业估计在未来的百年内还是无法脱离人工实现自动化装配线,实在是这玩意太精密了。
602835288 2017-9-24 10:40
美国周边的安全稳定,国内的各个产业都能依存,两次世界大战都是关键上场踢进关键进球。科技实力可想而知。