,
τ θ 
, θ 
(. 8.1, ).
:
.
3 : 10, 30 60 .
( 10 ) - ( 30 ).
S3
,
τ θ , θ (.2., ).
t 
t .
: t 
= t + t
10 . 10 S2.
- .
(, %)
, :
= t / t , % = (t / t )100%.
4 %: 15, 25, 40 60%.
%, .
- .
, 621-4/8/24 1 170, 700 1400 / %: 15, 40 40.
, (% = 15%) , .
(% = 40%) , .341 25.01.13
