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Ǽ ؿ ϴ ġ ǰ(() ̴ Ͻð Ǵ ع ǰ (ð ) ) ҰϿ ġ ϱ Ȳ
̹ å з ߽ ȯϿ ̻ ؿ ̴ϴ ʵ ϰڴ١ ̴.
Ǽ, ؿ ̴ϸ ذ Ѵ.
Ǽ簡 Ͻð ϵ ǹȭϰ, ϴ 쿡 ذ ȹ̴.
, ð ߰ܰ迡 Ͽ ǰ ȭϰ, ˻ 2 5% ȮϿ ˻ ŷڵ Ѵ.
ذ Ǵ 쿡 Ͻð ع ü ֵ ϰ,
- ع ˻ ο Ͽ ΰ 巡ż ظ ȹ̴.
ÿ ؼ ٴڹ ( Ʈ, ٴڹ ) ȭѴ.
ڻ ( ȸ 24 ݿ , ݿ ) ϵ ȯϰ, ڻ ݾװ ո ϴ ó ̴.
ƿ, LH ٴڱ 1 Ѵ.
ٴ β 4cm (21cm25cm)ϰ, ö ð 25 ÿ 4 ȭ(49dB37dB) 1 ء Ѵ.
̸ ؼ 24 ù 1 ϰ ü Ǹ ΰ Ȯ ֵ Ѵ.
䱳 , ϰ ̹ ġ ο ȭϴ ƴ϶ Ű ϴ μ, ̹ ؼϰ ִ Ǽ, ̿ δ ̶͡ ϸ鼭, δ Ǽ簡 ǰ ϰ Ͽ ε鲲 ϰڴ١ .
ƿ, δ ܱ ġ ̶͡ ϸ鼭 ο Բ ̰ڴ١ .
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