Manual instruction

277
hi
    
     

   .
    10.
    
 ,   11–13/ 279
  :
   -
 
 ,  
    
     
    
     
     
     
     
      
     
     
    50 %
()    
 (   x 
  L
w
).   
   
 : L
w
=1h
-1
.
     ,
       
     
    
  - 
     
      
      
 
     
   -
     
   .
     
      -
     
   -  
  - 
    
-    
      

    
  -  
  ,  
- -  
  
   
       
     
    
    
    
      

   
       
    
15      
 -   
     
     
   
     
    