-> dB
Ԕ(x)ͯdB
rg2014-1-2 15:20:49 dBt(y)Ժ
ڃͯdBĆ}^Մˣ@dBl(f)ļ(ji)dBίٴ˂ҕenjںϵdBLġδϣҲdͥϣԼLт麢xίķʽͯdB?һ҂ķ!
ҽBĿǰ҇sн900fdBÿ40f10qº60qǰdBl(f)ăɂ߷ڣ(ni)0-9qİdBռ38.5%10-29qĻռ40%.ͯdB?ҽhͯdB(yng)(dng)ץoίֻ@ӲŲ`飬e^ίѕrط
fͯwٰl(f)߀δȫdB(f)l(f)òrƣ^l(f)Xp(do)W(xu)(x)yעСОw(yn)ߕ(do)Ӱδ|(zh)ͯdB ?ӵ˰dBL(yng)^ڽäĿĞ麢xÛ]пƌW(xu)(j)ίt(yng)(dng)ϻǰȥҎ(gu)I(y)ĿdBt(y)Ժ\
Ŀǰ҇õίdBķֻձˎίЧ̫@g(sh)ίܕpڰl(f)X(jng)ͯdB ?]LтԞ麢xt(y)Y(ji)ϵί@ӼЧ،dBίðdBһepΘ!
Cͨ^(qun)ҵĽBŴҌڃͯdBĆ}һ˽҂ѣֻҪ҈Գt(y)Ժ_xһM㺢ϣ߀Ҫ^m(x)˽Ո^m(x)cھԃ!
аdBĆ}ՈԃھҞ