 
 
 
 

 
 
  2019        
  
2019-06-10
     9                           2019                       2019                                                                 2019              725  ／        6120  ／          2019               1066  ／          496  ／        2019            1200  ／        7980  ／  
 
    
 
 
  
  
             
  19.9       
           
   5G    
         180  
2014-2015 ©                      蒙ICP备06002822号-1