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̹ λ ó ϼ õ Ȯ Ըϰ ùε Ȱ ҽŰ ƴ.
λ ó Ű ټ ߴ ϼ 10, õ 7 Ȳȭ Ȳȭչ, ϸϾ һȭ, ƼƮ˵̵ ˵̵ ֿ 빰 ߴ.
, ȲȭҰ ֿ ι Ÿ. , ϼ ϼ ؼ 빰 Ȯε, ϼ ۾ ǽѴٸ 빰 ȿ ŵ мߴ.
õ , Ϲݱ ؼ Ȯεƴ. Ư, λ õ, ؿ뱸 õ, õ Ȳȭ 0.078 0.006ppm, 0.150 0.007ppm, 0.048 0.004ppm ϸ ѷ ȿ Ÿ.
λô ̹ ݿ, Բ ϼ ü 밳 ȹ̴.
Ⱥ λ ȯ濬 Ȱȯ ùΰǰ , ε Ȱ ̶͡ ߴ.
̻