鐵軌都有熱脹冷縮，所以傳統鐵軌是留間隙的。高鐵不留間隙，是用結構硬把熱脹冷縮的效應限製住，這導致鐵軌內應力巨大

來源: akuan 於 2019-01-31 15:45:00 [舊帖] [給我悄悄話] 本文已被閱讀：次

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