                                        561

    (g ^ g  g , ) ,    -
  ,         -
   ,     .

 ,     ,  V> P, 
    .      -
       ,   -
         , 
Vf' > /     V/E^ < /    ,  
   ,    
-,     .

 ,  (18.37)     
  -.     -
,   ,  .  
    ,     .
  .

18.6.1      

     ,       
  .       -
  ,        100%.  100%?
     ,   ,     
.       - , -
  ,  ,     
.

     , , 
, = 1       = . = , = ^   .  ,  Z> =  ==
= D^ = ^ = D^ = ^   ,     (18.13)  -
 :

^0-.                                (18.38)
k

  (18.38)  ',     -
      :

V _ 1
-,                                 d8-3?)



 ,    Zink      
,      $8     
$65  ;       10%.    
  ,  ,      -
 100%,     ,   = $8.     
(18.38) ,       
Zink  1/0,10 = 10.        Zink -
 -  $65/$8 = 8,1   V/Ey = 10 > / = 8,1,  
 Zink .