, : , , .
() (, ) . (I), (D q), D t :
(12.47)
, (S) (j):
(12.48)
. 11.4 , [. (11.26)]. , :
(12.49)
q , qJ , , . . :
(12.50)
, , . , (12.50) .
(12.50) :
(12.51)
. .
(12.52)
, , :
+ = - = an, (12.53)
a , .
, qE, , ru:
qE = ru,
, q/r = b,
u = bE. (12.54)
b (). , , .
(12.54)
u+ = b+E u- = b-E (12.55)
(12.53) (12.55) (12.52),
j = nq a (b+ + b-) E (12.56)
- S, l (. 12.28). , (12.14), (12.56):
(12.57)
I = jS, (12.57) :
(12.58)
. (12.58)
|
|
(12.59)
, g , , . .