Unmanned boats conduct geological survey in Hainan

        

      

      

        
          
          China Daily/Xinhua |
          Updated: 2017-10-24 07:22
          
          
          
          
        


        
      

      

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Jinghaihong, an unmanned boat, conducts a geological survey off the coast of Sanya, Hainan province, on Oct 23, 2017. [Photo/Xinhua]
 
  
 
  

 

 
 

 
 

 

        


        
        
      

        
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