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.
, .
ϛϚϐϖϗҨҡϑϙϔϑϖҧϗϑϖϞϜϚϛϔϞόϙϔҨ
18.
t ҸҼҴҺӅҼӆҮҸһҼҽҹҴҴҵүҶҶҪҶҹҸҮҴҵӈӁүҷҲӉӇҵүҴҼҺҸҹҲҼҪҷҲӉҺҲһҬһҸҸҼҬүҼһҼҬҲҲһҲҷһҼҺҽҴӀҲӉҶҲҲұҵҸҰүҷҷӅҶҲ Ҭ
;
t һҷӉҼӆҹүҺүҶӅӁҴҽһҴҵүҶҶҲҴҵүҶҶҷҸҳҴҸҵҸҮҴҲ
t ҹҺҸҼӉҷҽҼӆҴҪҫүҵӆҲұҮҬҽҿҹҺҸҬҸҮҸҬӁүҺүұҴҪҫүҵӆҷӅҳұҪҰҲҶҴҸҼҵҪҲҹҺҲһҸүҮҲҷҲҼӆҴҪҫүҵӆҲҮҽӃҲҳҸҼҼүҺҶҸһҼҪҼҪҴҴҵүҶҶҪҶ
(1) (2);
t ҬҴҵӈӁҲҼӆӇҵүҴҼҺҸҹҲҼҪҷҲүҴҸҼҵҪ
.9
0712_1208 / CG_2008
.
230 .
.
3.
3x0.75 2 8.
…
t ҮҬҽҿҹҸҵӈһҷӅҶҬӅҴҵӈӁҪҼүҵүҶҸҼҴҵӈӁҲҼүҹҸҮҪӁҽҹҲҼҪҷҲӉҴҴҸҼҵҽ
t ҸҼҬҲҷҼҲҼүҮҬҪҬҲҷҼҪҴҺүҹӉӃҲҿҹҪҷүҵӆҽҹҺҪҬҵүҷҲӉҴҴҸҼҵҽ
t ҹҸҬүҺҷҲҼүҹҪҷүҵӆҽҹҺҪҬҵүҷҲӉ
t ҮҵӉҮҸһҼҽҹҪҴҴҸҷҼҪҴҼҪҶһҷҲҶҲҼүҴҺӅӂҴҽҺҲһ
2 (
).
: L() - N().
(L) = ,
(N) = ,
= , -
(1) (2) =