On August 25, 2018, the cutter head was not worn-the 3rd industrial shield machine-the 12-standard gold flow section of the 1. phase II civil engineering of Chengdu Metro Line 6 was fully connected.


On August 25, 2018, the cutter head was not worn-the 3rd industrial shield machine-the 12-standard gold flow section of the 1. phase II civil engineering of Chengdu Metro Line 6 was fully connected.

 





 

 

 

 

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