如果其它方法更便宜，就没有悬索的必要。科技的发展要先实现钢铁的大规模制造，然后悬索桥才有经济价值。不是拍个脑袋的事情

来源: 咲媱于 2026-02-02 08:22:18 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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