[] Ȼ( ) 29 Ȼñٷպ ȸǽǿ ȭг 20 , Ȼ, ٷκ ڰ ġ ȸ ߴ.
̹ ȸ ұ ġȮ εʰ ġ ȳ ġ ϰ ȳ ٷκ ϰ ؼҸ ٷ 縳 ϱ õƴ.
ȸ ڴ ٷκ ̾ ڵ ñ ؼϰ ־ ұ ġ ڴ ߴ.
Ȼ ڴ ǹ ġ Ӹ ƴ϶ , ұ ȸ ġǵ ̶ ߴ.
ٷκ ġ Ը 켱 ҿ 60~90%, ִ 20 ġ ϰ ִ./Ȼ
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