|
|
| ,
| |
| ,
| |
| 1 , , ; −
| |
| ,
| |
| , . , ό ,
| |
| ( ),
| | ό ,
| − ;
− ,
, , ;
− :
− -;
−
;
−
|
|
|
|
A EPD = ∞
AB EPD > 1
B EPD = 1
BC EPD < 1
C EPD = 0
TR = P×Q ;
EPD = 1 TR ;
|
|
| |
|
| TR
| | ↑ P
| ↓ P
| | EPD > 1
|
|
↓ TR
|
↑ TR
| |
| | EPD = 1
|
| TR
| | EPD < 1
|
|
↑ TR
|
↓ TR
| |
| | EPD = 0
|
| ↑ TR
TR= 0 P=0
| ↓ TR
| | (ΔQ = 0),
| | EPD = ∞
|
| TR → 0
| TR →∞
| | ETRP ( ) = 1 + EPD
|
|
|
| |
| EcrossD = (ΔQ/Q)dx / (ΔP/P)Y =
= (ΔQdx/ ΔPY) × (PY/Qdx)
| | EcrossD -, .
| |
()
| EcrossD > 0
| EcrossS < 0
| |
()
| EcrossD < 0
| EcrossS > 0
| |
| EcrossD = 0
| EcrossS = 0
| | | | | |
: 2015-11-05; !; : 400 |
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