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̹ ΰ λ ϰ, һε ֹ δ ֱ ƴ.
̳ Ŀ ǿ , ߸÷ ǥ̻, ڱâ üһοȸ ߰ ϱ ߴ.
ô ̿ Ȱȭ ǰ(6~10%) ϵ ϰ, پ ȫâ ù ̿ Ȱȭ 弱.
߸÷ ߰ , ð һε鿡 ֹݾ 2% ߰ Ѵ. ƿ 0.1% θǿ ϰ, پ ̺Ʈ ùε ̿ ߴ.
üһοȸ һε ΰۿ ֹᰡ ſ ۿ Ͽ ̿ ֵ ¿ .
12 α ߿ ؼ ù ȫ غⰣ ģ 3 ߴ.
ǿ Ȱȭ ؼ Ȯ ùε ̿ ʼ ̴١, һοԴ ֹ δ , ڿԴ ǰ ֹ ־ Ȱȭ ù Բ ֱ⸦ ٶ١ ߴ.
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