atest na izolacyjność akustyczną
| 11:12 Oct 19, 2012 |
| Polish to English translations [PRO] Law/Patents - Patents | |||||||
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| 4 | soundproofing insulation certificate |
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| 3 | sound insulation certificate |
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Answers
37 mins confidence: 
soundproofing insulation certificate Explanation: IMHO, a w zdaniu proponuję: "Fire door(s) has/have soundproofing insulation certified for 32 dB" |
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38 mins confidence:
sound insulation certificate Explanation: |
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