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1955-1957 武汉长江大桥弃用气压沉箱法采用管柱钻孔法 (1 gen 1955 anni – 31 dic 1957 anni)

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【桥见武汉】武汉桥梁发展里程碑 Bridges of Wuhan CT(modern)

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Data:

1 gen 1955 anni

31 dic 1957 anni

~ 3 years

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