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关注：1
2013-05-23 12:21
求翻译：2 隔音棉 δ=3mm 上海 韩国现代技术，低频隔离指数高是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
2 隔音棉 δ=3mm 上海 韩国现代技术，低频隔离指数高
问题补充： |
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2013-05-23 12:21:38
2 cotton insulation δ = 3mm Shanghai Korean modern technology, high frequency isolation index
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2013-05-23 12:23:18
2 * * noise cotton * δ = 3 mm * Shanghai * Korean modern technology, low frequency isolation index is high
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2013-05-23 12:24:58
2 Sound-insulated cotton and kapok δ=3mm Shanghai South Korea modern technology, low frequency isolation index high
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2013-05-23 12:26:38
2 soundproof cotton δ =3mm Shanghai Korea modern technologies, low-frequency isolation index
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2013-05-23 12:28:18
2 soundproof cotton δ =3mm Shanghai Korea modern technologies, low-frequency isolation index
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