比较一下俄罗斯的贝阿铁路，冻土问题层出不穷，很多地段车速慢不过40kmh, 青藏铁100kmh,平稳运行多年。

来源: 方外居士于 2025-12-07 15:26:17 [旧帖] [给我悄悄话] 本文已被阅读：次

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