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ǥ ȸ 3 ù ȸǿ óϰڴٰ ν Ҿִ ݴ븦 ȸ ߴ.
Ҿִ ǹ ذ ο Ϻ 緮 ִ , ʰ 귮 3% ̻̰ų Ұ 5% ̻ ϶ϸ ΰ ǹ ϵ ߴ.
ȿ ʰ 귮3~5%, ϶5~8% Ͽ ε ݴ Ҹ ִ.
蹮 ǿ ȿ ѷ 쿡 ݸ ǹ ǽ ʰ, ü Է ִ żǸ鼭 ߴ١ 3 ȸ ӽȸ ƴ Ǿ ȵȴ١ ˱ߴ.
̾, Ұ ǹȭϴ , Ȱ ִ ȿ ΰ ǰ ĵ Ұ ϳ ̴١ ߴ.
, ۹ұ ܰ Ȯϰ, ֿ 15 ǰ 깰̶ ̱ PLC ݼսǺ Ǵ ϴ ؾ Ѵ١ ߴ.
ȸ ̳ ä ϴ ˱ Ǿ ɽǰ ȸ, ǥ, ǰθ ߾Ӻó ̴.
̿ȭ