1
2
3
. 4.1 . , .
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4.1
, , . : , , 90 ( ) . , .
, , , . i r :
, (4.1)
m , .
, , . 4.2 . :
(4.2)
(4.1) (4.2) , , :
(4.3)
, (4.3) . D = 2r, L XC. ,
, (4.4)
, ( , , , , ), I , N , L .
, .
. ( 4.2), XC . dx .
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(4.3):
. (4.5)
4.2
, , + .
, (4.5) r. ,
(4.5) :
.
4.2 , , , , ( 4.3).
C |
α1 |
α2 |
4.3
: ,
. (4.6)
:
, .
, (4.6.)
. (4.7)
(D << L), (4.7) (4.4) .
(4.4) :
.
, , , :
. (4.8)
, :
. (4.9)
, , Φ :
,
, .
, (4.4), (4.6), (4.7), . , .
... , .
. :
,
e , ; , .
1 2 , , ( 4.4), .
4.4 ( n -)
, 3 4 , εx, ... .
.
, 3 4, ε = VBd,
d 3 4.
,
n , Sc = dh 1 ( 2), h . ...
, (4.10)
, I = 0,09 .
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(4.10) , I = const, ε = f(B).
:
I ( );
R10. . = 0 R10 ;
R20. R20 ;
. (4.11)
1 . .
2 ?
3 .
4 .
5 .
4