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1 Aplicarea tehnologiei pentru plăcile de ciment armate ... - Dedeman

1 Aplicarea tehnologiei pentru plăcile de ciment armate ... - Dedeman

1 Aplicarea tehnologiei pentru plăcile de ciment armate ... - Dedeman

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Frecvenţa centrală a benzii <strong>de</strong> trecere, HzNivelul mediu a fonoizolaţiei R=39 dBFigura 3. Test fonoizolaţie zgomot exterior9

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