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꼼 70% ǥ Ͽ ΰϸ, ջ, ջ, и . ջ ջ и 0.2~0.5% ܰ躰 ȴ.
ջ Ϲݰ μ 0.2~0.4% Ǹ, и 䡤 0.07% и 4% и, 0.2% Ÿ и ´.
꼼 ú ְſ ε꿡 꼼 ðð 60% ǥ Ͽ 꼼 20 ̻ , 7 9 1/2 ϰ ȴ. 7 1 ߳η ϴ 찡 20 ̸ ǥⰡ Ǹ 12 ΰϰ ִ.
, 꼼 α 500 250 ȭǾ 꼼 μ 250 ʰϴ Ϻθ 2 ̳ ֽû 꼼 湮 Ǵ ý ¶ û ϴ.
꼼 ΰǴ , ΰ Ȯϰ ֵ ֽñ Ź帰.
ֵνŹ jjnews365@naver.com
2025.11.22() 22:52













