4.15 . D= 200 * 10-3 . = 390 * 10-3 . . 240 * 10-3 . , dni = 2.0 * 10-3, dno= 6.0 * 10-3 ., = 6.5 * 10-3 . . . (, , z) .
. 4.15.
, a, u-b, - , = 41.4 * 10-6 3/c. , . , , . y z . . 360 y= 1 * 10-3 3 * 10-3 ., 120 , y > 3 * 10-3 , , 120 . . = = 10 * 10-6 80 * 10-6 3/.
Ѳa . : Ѳa= 62 ( ) , Ѳa= 104 ( ).
1. .
, z = 50 * 10-3, 100 * 10-3, 150 * 10-3 200 * 10-3 ., 4.16. , . z= 50 * 10-3 . , . .
4.16 - = 41.4 * 10-6 3/
4.17 , , , . , = , . α ˃ . . , .
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. 4,18, max . . ,
(4.8)
(4.9)
, , , . 4.19. , α, , . 4.19.
, , . 4.20 4.21. :
(4.10)
(4.11)
(4.12)
(4.13)
, , .
. Z.