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成貴高鐵開(kāi)始全線(xiàn)拉通空載模擬運行

2019-12-03 08:01來(lái)源：新華網(wǎng)

【當下現存最早、保存最完善的古代敞肩石拱橋——趙州橋】趙州橋，又稱(chēng)安濟橋，因橋體全部用石料建成，當地稱(chēng)做“大石橋”。建于隋朝年間公元595年－605年，由著(zhù)名匠師李春設計建造，距今已有1400多年的歷史，是當今世界上現存第二座、保存最完整的古代單孔敞肩石拱橋。

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