O(sh)Ӌ(j)Б(yng)ԓѭԭtЩ
(li)Դ:http://www.szyuhui.cn/ | l(f)r(sh)g:2019/1/7 | g[Δ(sh)
߶1mһ5mgwЧ^(q)ƽ_(d)1015dB(A)(125Hz40000Hz1/3l)_(d)20dB(A)һ(li)vԽxԽh(yun)ЧԽO(sh)Ӌ(j)Б(yng)ԓѭԭtЩ
1wһ(g)ЙC(j)wMɲ^M(jn)O(sh)Ӌ(j)ĕr(sh)ҪעҪصąf(xi){(dio)ʹЙC(j)ںһͬr(sh)Ҫֿ]Ͼ^(gun)c߅h(hun)ⲿf(xi){(dio)ʹh(hun)ȥ(sh)F(xin)wľ^(gun)C
2˞鱾Ͼ^(gun)O(sh)Ӌ(j)е^(gun)pw(xing)O(sh)Ӌ(j)Ҫ˵ĽǶȳl(f)M(mn)˵ĸNОͬr(sh)ҲҪ]˵Ļ(x)T“˞鱾”ԭt̶ܴϛQϾ^(gun)O(sh)Ӌ(j)ˮƽ
3·(ni)·(ni)ˆTͨԄ(dng)B(ti)ķʽ(li)pϾ^(gun)ɸل(dng)B(ti)^(gun)ҕX(ju)Կ֪(dng)B(ti)^(gun)AһNwӡͷՇĠI(yng)
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