(. 24, ), I = I = I . , . . = k I . (25.24) :
(29.5)
(29.15)
k .
, , .
. 24. :
; ;
; 1 ;
2
. 24, = f (I) n = f (I) . . . , . .
25% (). 25% .
. , . , , , 2 20% , , 50% .
n = (M) . 24, . ( 1 2) . , , , , , . , , . . .
|
|
(29.16)
, 25% .
U, . R (. 25, ). . . - R . , R , , .
(. 25, ). , , . . , .
. , (. 26).
. 25.
. 26.
: r , r . r , (. 25, ), I = I a I , , . (. . 25, ), k pr = (I pr/ I a)×100%. r , k pr ³50%.
(. 25, ) . r (. . 25, ) I = I + I , . , , .