-> dBt(y)Ժ
dBоô
rg2014-1-2 17:41:31 dBt(y)Ժ
ڱdBоô@}҂ҶҪ֪dB@o˂ΣDzСܶ˶ҪJ˽@Щĸ@ЩκΕr҂ҶҪעӺõ˽@Щ҂ҪԔĽBһ±dBоô?
dBһo҂˺ܴĂdB˂^µһNl(f)oߵĽܴĂ҂ԓ˽dB֪R߀ҪðdBAֻ@Ӳ܉pٰdBĂôdBоô
dBίt(y)Ժкܶ࣬xҲһyԓl
ίdBt(y)ԺČһҺõt(y)Ժ횓һ֧Č飬ίdBͬrҪąfdBͬͨļdBijN̶ϴһķdBоô?ԣһ֧õίdBČ҈FdB^OҪt(y)Ķ
ΣίdBt(y)gSFίdBgİl(f)չȻһЩίdBt(y)Ժ\Ԅ(chung)µίg@ȱ䰲ȫ͌I(y)Ը|ɡdBоô?ҪһЩԄ(chung)?zhn)֮t(y)ԺƫƼPI
ڰdB҂˽@Щ֮dBоô҂Ҳͺ҂߅зdzļ@Щo҂?gu)ܶӰ푵҂κΕrҪעӺõıo҂ԼڰdBκΆ}ֱԃ҂Č
аdBĆ}ՈԃھҞ
һƪ: dB
һƪ: dBI(y)t(y)Ժļ