* Ư¡: 2 7 Ѱ
* ð ŷ: 513020
* ð Ѱ ܷ: 99160
* ְ: 1% ϶ (ŷ 22243)
* ֱ Ѱ: 2011 6 10 (ְ 6800, ŷ 879836)
* ֱ Ѱ ְ: 3.5% (ְ 7040, ŷ 1055863)
ڵ ǰ Ʈѽ Ѱ ġھҴ. 9 11 55 4745 ̴. ù Ѱ 2011 6 2 7 ̴.* ð ŷ: 513020
* ð Ѱ ܷ: 99160
* ְ: 1% ϶ (ŷ 22243)
* ֱ Ѱ: 2011 6 10 (ְ 6800, ŷ 879836)
* ֱ Ѱ ְ: 3.5% (ְ 7040, ŷ 1055863)
̰ 帧 Ϻ '(Li-Fi)' ַ Ʈѽ ÿ ΰƱ ̴. Ʈѽ 11.4% ϰ ִ ȸ ̳뷺ũ() ѱſ(ETRI)κ ñ ̿ Ҵٴ ҽ ̳ .
̿ ȸ ÷( 25%) Ѱ ϰ ִ. ÷̵ ̳뷺ũ 14.06% ϰ ִٴ .
(ñ [] '' ...Ǽ ֳ? )
ڵ ǰ ַ...ȸ ֱ
Ʈѽ ڵ µ ϴ ǰ . 1978 â ʱ ַ , 忡 90% ̻ ϰ ִ. GM, ƿ, ٰ پϴ.
ַ ǰ (Thermostat) ǰ µ ϰ Ű Ѵ. µ 긦 ð ȯŰ ̴. ۿ Ʈѽ з ϰ Ű Ϳ , 굵 Բ .
ȭ öƽ ǰ Ѵ. 24%. ֿ ǰ Ǹ Ŀ, й ݼӺǰ ȭ öƽ ü 淮ȭ ϰ ִ. öƽ ǰ ־ Ǵ ִ.
ȸ ֱ ȸ ȭ ̰ ִ. 3б 2724 3% ǰ 48% þ 75 ŵ״. ݸ й ݿ 65900 ⺸ 96% ްߴ.
2012 57 ÷ȴ õڼѰ( 50%) 3б -19 ս °, Ʈѽε(51%) ս 12 22 Ȯƴ.
̿ Ʈѽ ֱ 4б ջ -17 ߰, ְ(PER) (-) ǹ̰ . ְڻ(PBR) 0.39踦 ϰ ִ.
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