̓MCע-Ҋ} W(wng)վƏV} W(wng)վƏV} | |||||||
ٶȸrյQ
SI(y)εJ齨˾W(wng)վϢͿ̄@һN`W(wng)վҪƏVLҪLÑǾW(wng)վƏVrЧķʽ Ո(qun)y(tng)Ӌ(sh)(j) 1(j)cnnic20017µ{(dio)飺 51.3%Ї(lin)W(wng)Ñ(jng)ʹ 57.5%Ї(lin)W(wng)Ñ֪¾W(wng)վҪ; 2(j)Jupiter Media Metrix20017µĽy(tng)Ӌ47%Mͨ^팤ҺُIھa(chn)Ʒ MھُrҮa(chn)Ʒķͱǣ ݔa(chn)Ʒ 28% ֱLW(wng)̵W(wng)ַ 23% ݔ̘ 9% ݔ̵ 5% Lُl 5% 3(j)Georgiag(sh)оԺ{(dio)飺80ʂُIƷʹҵҪĮa(chn)Ʒ LߣÑܸL߾ИOᘌԣľW(wng)վģ̘I(y)W(wng)վărֵҲe Ҫ F(xin)˽ľW(wng)վҪǣ˽ҪԆ Ƿ^@ӵĽ(jng)vijһвϢY(ji)V10000lP(gun)Ϣ鿴һlҲͿǰ^10l20log˵21l10000lϢвЃrֵă(ni) ^fڙzY(ji)ĵ21l10000lУпܣ@NӛľW(wng)վ߀x͵߀HHվcLʧصǣW(wng)퓙z֮ǰęzY(ji)Ϣɱҕĸڸ֮LLĸLߌվcMͲLվc y(tng)ӋY(ji) 65-70%ľW(wng)cY(ji)ĵһ퓼ǰ10l 20-25%ľW(wng)cY(ji)ĵڶ퓼11-20l 3-4%ľW(wng)cеdzǧfY(ji) ǰ20λԽǰԽ ٶȸrՑr ھW(wng)վ;W(wng)֮gһ҂Ƴ˰ٶȸrա ͨ^҂(yu)W(wng)퓵MЇҪǰУ̵ĕrgAôֱÑLĶȡF̘I(y)ٙC ͨ^ٶȇČ˙Cֻ(yu)ľW(wng)퓲ǰ@ʹY(ji)|(zh)õߣVW(wng)õõw
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]P(gun) |