ͨI(lng)daoh(hun)ǸM≥35dBϵ(sh)≥0.84ļg(sh)......
F(xin)W(xu)C(j)
ͨ^......
Ͽɽ10-35ؐwЧܸ߶ϺͽY(ji)(gu)Ӱȫ......
ϵĸ߶cO(sh)Ӌ(j)ֱʽ۱ʽ߶ȣ1-5ףֱӰӰ^(q)ȫ]Y(ji)(gu)......
Ҫķɢڂ^ϕr(sh)͕(hu)l(f)ɢ......
P(gun)IO(sh)ʩp̼wS(yng)ã&zwnj......
ƽͨȾҪO(sh)ʩڲϿƌW(xu)ܼg(sh)ͽY(ji)(gu)O(sh)Ӌ(j)ȷȡ@ͻ......
ИI(y)ĺI(lng)ӭg(sh)cЈU(ku)ݵpؙC(j)
&nb......