O(sh)Ӌ(j)ԭtIJ
Դ:ϏShttp://www.prattandsmith.com/ | l(f)r(sh)g:2018/10/31 | g[Δ(sh)
߶1mһ5mgwЧ^(q)ƽ_(d)1015dB(A)(125Hz40000Hz1/3l)_(d)20dB(A)һvԽxԽh(yun)ЧԽãO(sh)Ӌ(j)Б(yng)ԓѭc(din)ԭt
1wVxϾ^һ(g)ЙC(j)wMɲ^M(jn)о^O(sh)Ӌ(j)ĕr(sh)ҪעҪصąf(xi){(dio)ʹЙC(j)ںһ
2˞鱾Ͼ^O(sh)Ӌ(j)е^pw(xing)O(sh)Ӌ(j)Ҫ˵ĽǶȳl(f)M˵ĸNО
3·(ni)·(ni)ˆTͨԄӑB(ti)ķʽpϾ^ɸلӑB(ti)^ҕXԿ֪ӑB(ti)^AһNwӡͷՇĠI
4ͬ^(q)ھ^F(xin)ϿвͬķʽԪͬr(sh)ͬ^(q)вͬĻy(tng)L(fng)(x)T^ԑ(yng)ԓO(sh)Ӌ(j)Ϯ(dng)?sh)Ļľ^ϣ@һ^҂Q֮“о^”һ(g)еijеԴϏShttp://www.prattandsmith.com/
P(gun)I֣,ĵַhttp://www.prattandsmith.com/gongsixinwen/12_4066.html