L(fng)C(j)Px͵Ďׂ(g)Ҫ(sh)
L(fng)C(j)P{(dio)ϵy(tng)ĩbڱĹVҪc(din)£ԳɆԪ{(dio)(ji)`L(fng)C(j)PܙC(j)wС`bռýg^σ(ni)bʩ
(j)I(y)IJͬY(ji)O(sh)Ӌ(j)D(sh)Hȥ(yng)ֿ]c(din)
1У
һǰӋ(j)ؓ(f)Ɂxa(chn)Ʒ(yng)עⲻͬL(fng)oʽ(hu)(do)L(fng)C(j)Pܵؓ(f)dҲͬ(dng)L(fng)ֱͨ^≦gr(sh)δ(jng)̎L(fng)C(j)Pܵ=҃(ni)ؓ(f) L(fng)ؓ(f)ɣ(dng)O(sh)(d)L(fng)ϵy(tng)r(sh)tL(fng)C(j)Pܵ=҃(ni)ؓ(f)ɡĿǰЈĮa(chn)Ʒһ㶼x(sh)H\(yn)е(yng)λr(sh)g(ni)ƽ\(yn)Еr(sh)g׃\(yn)Еr(sh)gL(fng)(hu)Ӱ푙C(j)MݔԲxԽԽãHxÙC(j)M(hu)F(xin)^(do)_(dng)^QΔ(sh)pҜݶȼӴ߀(hu)Ӵϵy(tng)O(sh)ͶY{(dio)ܺļӴ{(dio)Ч͡HxO(sh)ıҪl֮һ߀(yng)ء
2L(fng)У
ҪgƷ|(zh)ҪУ˓QΔ(sh)L(fng)زԽСQΔ(sh)Խt՚Ʒ|(zh)ԽãԽmʲôеĿ{(dio)gЮζL(fng)У˛]̎<L(fng)C(j)PܵxL(fng)ڲͨˮ՚M(jn)ډĹryʴһЩЌ(sh)HԌ(sh)H_L(fng)Ǒ(yng)@B(ti)µL(fng)ֵ۳ͨ^(jng)(yn)y@a(b)L(fng)(yng)ռxL(fng)2030%
3L(fng)ʽ
L(fng)ʽγ^ĚMcֱӰ푵{(dio)gĜضȈٶȈľԺͷ(wn)ԣҲ{(dio)ЧĺÉĚMҪһL(fng)ٶ·ԱCһLL(fng)ȡQڙC(j)oL(fng)L(fng)ڵC(j)o^(hu)(do)L(fng)½̽gO(sh)Ӌ(j)Mc(sh)H\(yn)РB(ti)Dϴ^ʑ(yng)(j)(sh)HĽgĽY(ji)(gu)ʽM(jn)߶ȵrxЙnL(fng)L(fng)ָ(bio)(yng)xL(fng)C(j)P̖(ho)ĿǰЈϵL(fng)C(j)P(g)SҵęC(j)oֵ]нy(tng)һ(bio)^ټϲֹزõPʽbC(j)MӶL(fng)^VM(jn)L(fng)ֵ^ڌ(sh)H؛r(sh)_C(j)oֵx30Paеķgx50PaC(j)oֵęC(j)MڳҎ(gu)20Paֵڌ(sh)H\(yn)бCõľ_(d)A(y)ڵĿյЧ
4
aָ(bio)40dBƫL(fng)C(j)Pܣb̎bֵ10Pa
bbʩ|(zh)עⱣ|(zh)ˮŷܼ^ϵy(tng)坍
cˮϵy(tng)O(sh)÷ʽˮƽϵy(tng)߀Ǵֱϵy(tng)ֹxôֱϵy(tng)^õıCˮŷC˷gČӸҪ
ͬ
- ʲôҪL(fng)QC(j)?
- M(jn)ҵĽQk
- ۏˇԼQ
- ʽL(fng)QC(j)ԭЩ?Щ?
- ʽL(fng)QC(j)İb֪
- ʽL(fng)QC(j)Sҿ՚C(j)֪R(sh)
- L(fng)QC(j)ÓQͨL(fng)¸
- Ʒ M(jn)L(fng)QC(j)xͣ
- L(fng)QC(j)ĻY(ji)(gu)
- xL(fng)QC(j)L(fng)QC(j)Ďc(din)(yu)c(din)