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21 1 ȸ ִ١ õǾ ִ. θ ȿ ȸ Ѵ.
ȸ 14 ڰ ʰϴ Ÿο ظ ִ ɰ ϰų Ȯ⸦ Ͻú ʿ ġ ִ. Ǿ ְ ۳ ɾߡְ ȭǾ Ӹ ƴ϶ ְ ԵǾ ǰ ִ.
ְ, б, պ ְ(07:00~ ) 65dB, ߰( ~ 24:00) 60dB, ɾ(00:00~07:00) 55dBϡ ְ 65dB, ߰ɾߴ 60dBϡ, ְ 75dB, ߰ɾߴ 65dB ϡ ȭ Ǿ,
ְ( ְ 1ð ̳ 3ȸ ̻ ʰ) ְ, б, պ ְ 85dB, ߰ 80dB, ɾߴ 75dBϡ ְ 85dB, ߰ɾ 80dBϡ ְ߰ 95dBϸ Ͽ Ѵ.
ȸ忡 ȸ ù ± Ͽ ȿ ϰ , 忡 112Ű Ǵ ü ϰ ؼ ֵ ϰ ִ. ȸ ڴ ȸ 翬ϴٸ ̷ ڽŵ ȸ Ѵٰ Ѵ.
̴ ߸ ̴. ȸ Ȯ Ͽ ȣϰ , ġ ̻ Ȯ ش ״ ùε鿡 ̾, ᱹ ϴ ȸ ̱ ̴.
ſ ؼ ȸ ȭ , ġ ̻ ϴ ȸȭ ȭ ϳ̴. Ȯ ϰ ؼ Ͽ Ÿ ġ 鼭 ȸ ȭ DZ Ѵ.
ʰ Ⱥܻ
ȳ
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