 
 
 
 

 
 
2019    98%    4G 
  
2019-03-18
        3  14                      2019                        98%    4G   98%                            15%        20%   4G     5G                                                          
  
   
 
 
  
  
2019            
3000       
    1.06% 
      34     
        200  
2014-2015 ©                      蒙ICP备06002822号-1