, , , , , , .
10, 15 18; 2 .
, . , . , ( ) . . . ( w < 140 ) , , ( ).
, , , , , .
.
. , .
, (7.1)
max , max = 1246,9 ×.
.
d = 8 [2].
. (7.2)
. (7.3)
.
. (7.4)
. (7.5)
. (7.6)
. (7.7)
(7.8)
d1 = 17 . 4 [2].
. (7.9)
(7.10)
13.
,
(7.11)
9.
. (7.12)
9.
9 [2].
. (7.13)
, (7.14)
D , D1 = 85 , D2 = 140 .
;
.
. (7.15)
|
|
. (7.16)
. (7.17)
, (7.18)
, (7.19)
. (7.20)
, d2
, (7.21)
(7.22)
. (7.23)
, (7.24)
,
.
. (7.25)
.
.