be˳ȩŶ
V\Чh(hun)Ƽ˾
l(f)rg:2018-4-19 21:21:03
c(din)Δ(sh)
l(f)rg:2018-4-19 21:21:03
c(din)Δ(sh)
be˳ȩŶ
(j)Aڱeеl(wi)M(WHO)ȩ°ӑȫ30һJ(rn)飺ȩ°һ°|(zh)
Ҷ֪ȩһNoɫд̼ˮĚw̵|(zh)35%-40%ˮҺͨQ鸣R(bio)Һȩ˾҇жW(xu)Ʒ(yu)ȿϼȩ߾ӵڶλһbķӼȩɸ_(d)0.40mg/m³etп_(d)1.50 mg/m³

һrݵʹÕrgԽL҃(ni)h(hun)мȩpضԽߝԽԽڼȩጷţͨL(fng)lԽbмȩጷҲԽ졣
ȩ˾f(ni)߀]аѼȩО°һc(din)Ŀǰѽ(jng)C(sh)^ȼȩ϶wӰ푣ptۜItwϵy(tng)½(do)wΣЩbĪ;ǑǼȩ^
̎̎㲻_ȩôk
Dzһc(din)ͰYѪ(dng)Ȼǣ

һҪȺͽ^zڶҪw|(zh)wءߝ^z٣zߵww|(zh)ôܛ]ɶ}͝ȣLڽ^zzߵwpw|(zh)ã܆}ͺܴ@ͺñһˎ^ܶһֻnjһ^L~f@c(din)ˎ̫Ӱ푲ڼȩ҂ȻҪz넩w|(zh)wlܴ_Լwȫ̎һ^õĠB(ti)֮أȩ˾L̎ڼȩ(bio)ĭh(hun)Ӱw(do)°׃Uķ߀һȩ̎ȩU


