波音一年用的钢还不够造一艘驱逐舰，一架波音787才用11吨钢，80%是复合材料

来源: 丁丁在美洲于 2025-02-11 08:20:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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