, , , , .
ρ ( Ѳ - / 3) -
m ' V:
ρ = m/V. (1)
, , . ρ20 , , 20 (t20). ρ1 () / 3 t1, t20, :
ρ1 = ρ20 [1 - b (t1 - t20 )], (2)
β ᒺ t20 t1, 1/.
() ,
t20, , , .
䳿 , (), (), , , , , .
,
, FA (. 1,), 䳺 (), ᒺ V ,
: FA = V ּ g ּ ρ, (3)
V ᒺ , , 3; ρ - , / 3;
g , / 2.
䳺 ∆ F G c FA: ∆F = G - FA = G - V ּ g ּ ρ, (4)
∆F G , .
) )
.1. : ) ) .
.
, . ij : 1000 ÷1400 / 3. 2,0.
-
.
.1, - (). 2 (, G) ᒺ 1 . 璺 4 , () . , , , , . , 1 - 2 - . ∆F, 䳺 , , , , , U : U = 1 - 2. .
|
|
- , , - -, , . ³ . 1,0 2,0.
() ( .1, ) - , ᒺ . 1, ρ 4. 3 ( ) 璺 1 2. ³ ρ 1 4 - 5.
, , -, U - . , , , . 1,0; 1,5.