皇冠体育app's first cross-sea rail-road bridge takes shape
chinadaily.com.cn | 2017-08-23 10:40
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The first steel truss girder is put on piers of the Pingtan Haixia Rail-Road Bridge on Aug 22, 2017. It is the first time that Chinese constructors have lifted a whole girder between two piers in building bridges. [Photo/IC]
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