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    For rail inspectors, tiny flaws are big trouble
    
      
    
      
    
        
          By  Yang Jun in Guiyang | 
          chinadaily.com.cn |
          Updated: 2021-03-03 16:38
        
        
          
          
          
          
        

      
    


      
    
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   It's a big challenge for these railway staff to walk more than eight hours carrying nearly 50 kilograms of detectors to inspect about 10 kilometers of railway lines in a day.[Photo by Miao Guoqiang/For chinadaily.com.cn] 
 
     

    
        
      
    

      
      
    
        
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