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a(chn)ƷB JRp|(zh)ߏˮľмͺa(chn)Ʒɷǽٗlװ^ͷǽٱM_e≥20ϰ
13833648003
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a(chn)ƷB
JRp|(zh)ߏˮľмͺa(chn)Ʒɷǽٗlװ塢^ͷǽٱMɡ_e≥20ϰ(ni)Ϟ48Kg/m3xIJްS`ܶSƫ^±4s|(zh)3Ҙ˜Ҫ0.3%ϵ(sh)NRC1õͬrһWܡbǰɇͿNɫMҕXҪ
g(sh)ָ
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≥37dB
ܶȣ 44kg/m2
ʹÉ 20
Ɖdɣر(sh)13.5
_ܣ _6Οo؞ͨѼy
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a(chn)Ʒַ
http://m.szyuhui.cn/shuinishengpingzhang/263_2307.html
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13833648003
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