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    Tunnel boring machine Dinghai unveiled in C China(1/1)
        
        
    
	
        2024-01-18 16:37:26
         Ecns.cn  

        
        Editor :Yao Lan        
    

    

    
    

    

    
        

   
        
        
    
                          
    The tunnel boring machine (TBM) Dinghai, with a maximum excavation diameter of 14.57 meters, was officially unveiled in Changsha, central China's Hunan Province on Wednesday.
     
                                       
                 
            
            
            
        
    
        
        
    
    





    

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