B(yng)i(chng)iϵѴ
һϡ
@tٿٿQ~SնiϿ10-15%^(gu)20%
Ҫ֥ȡiϵϱϿ10%-25%I(yng)B(yng)25%;Ҫ10%ҪÓֻιiϲ˼
㡢ȡiϿ5-10%ĸiʺڲιNιǰ
Zʳ
СQ㶹iϿ50%^(gu)60%
塢(dng)
QӼ~(y)ǷѪë۵iϿ4-8%iιѪi~(y)ۿ10%QӼ~(y)۾ֻ5-6%@ϕr(sh)Ҫע}ױ
V|(zh)
̼ؐۡ}}ʳ}ȡiϿ1-2%ʳ}^(gu)0.5%ԪҪ(yn)Ҏ(gu)ʹ
Gϡ
ˮĸƼˮɏˮJˮr(nng)~ټޣӵ@G֭I(yng)B(yng)SһռϿ40%