B(yng)i(chng)iϵѴ
һ
@tٿٿQ~SնiϿ10-15%^20%
Ҫ֥iϵϱϿ10%-25%I(yng)B(yng)25%;Ҫ10%ҪÓֻιiϲ˼
㡢iϿ5-10%ĸiʺڲιNιǰ
Zʳϡ
СQ㶹iϿ50%^60%
(dng)
QӼ~ǷѪë۵iϿ4-8%iιѪi~ۿ10%QӼ~۾ֻ5-6%@ϕr(sh)Ҫע}ױ
V|(zh)
̼ؐۡ}}ʳ}iϿ1-2%ʳ}^0.5%ԪҪ(yn)Ҏ(gu)ʹ
ߡG
ˮĸƼˮɏˮJˮr(nng)~ټޣӵ@G֭I(yng)B(yng)SһռϿ40%