2018.02.22 19:07
       
                                     
                            
                             
                            
      
                                  
                                
                              
           
                                  
                        
          
                                 
                             
                               
            
                                   
                            
                                 
                             
                      6    8cm              10
12cm                     23
        6  8       30  35                
                             
                           
                                     
                         
                            
                               
                              
                            
                        
               0.1%                2%  
                        
        
                                                                                                                                 
 