̓MCע-Ҋ} W(wng)վƏV} W(wng)վƏV} | |||||||
ٶȸrյQ
SI(y)εJ齨˾W(wng)վϢͿ̄@һN`⣬W(wng)վҪƏVLҪLÑǾW(wng)վƏVrЧķʽ Ոy(tng)Ӌ(sh)(j) 1(j)cnnic20017µ{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)GeorgiagоԺ{飺80ʂُIƷʹҵҪĮa(chn)Ʒ LÑܸL߾ИOᘌľW(wng)վ̘I(y)W(wng)վărֵҲeߡ Ҫ F(xin)˽ľW(wng)վҪԣ˽ҪԆ Ƿ^@ӵĽ(jng)vijһвϢYV10000lPϢ鿴һlҲͿǰ^10l20log˵21l10000lϢвЃrֵă ^fڙzYĵ21l10000lУпܣ@NӛľW(wng)վ߀x͵߀HHվcLʧصǣW(wng)퓙z֮ǰęzYϢɱҕĸڸ֮LLĸ֣LߌվcMͲLվc y(tng)ӋY 65-70%ľW(wng)cYĵһ퓼ǰ10l 20-25%ľW(wng)cYĵڶ퓼11-20l 3-4%ľW(wng)cеdzǧfY ǰ20λԽǰԽ ٶȸrՑr ھW(wng)վ;W(wng)֮gһ҂Ƴ˰ٶȸr ͨ^҂գ(yu)W(wng)퓵MЇҪǰ̵ĕrgAôֱÑLĶȡF̘I(y)ٙC ͨ^ٶȇČ˙Cƣֻ(yu)ľW(wng)퓲ǰ@ʹY|õߣVW(wng)õõw
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