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Снижение шума: Rw = 60 дБ; Индекс улучшения изоляции воздушного шума: ΔRw = 10 ..
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Снижение шума: Rw = 59 дБ; Индекс улучшения изоляции воздушного шума: ΔRw = 8 дБ; ..
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Снижение шума: Rw = 67 дБ; Индекс улучшения изоляции воздушного шума: ΔRw = 17 дБ; И..
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Снижение шума: Rw = 58 дБ; Индекс улучшения изоляции воздушного шума: ΔRw = 7 дБ;&nb..
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Снижение шума: Rw = 69 дБ; Индекс улучшения изоляции воздушного шума: ΔRw = 18 дБ; Ин..
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