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Chinese-made super-sized TBM starts work through Yangtze River 

      

      
Source: Xinhua| 2019-12-26 17:27:31|Editor: huaxia

      

            
      

      

      

      

      
    

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      With a diameter of 15.03 meters, a Chinese-made tunnel boring machine begins excavating a tunnel through the Yangtze, China's longest river.
       

      

      

      
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