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ÖNORM EN 1793-1:1998-03

Заменен
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption
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Ссылочные документы

ÖNORM EN 1793-3:1998-03
Действует
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 3: Normalized traffic noise spectrum
ÖNORM EN 1793-1:2013-01
Заменен
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption

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ÖNORM EN 1520:2011-05
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ÖNORM EN 1793-1:2013-01
Заменен
Road traffic noise reducing devices - Test method for determining the acoustic performance - Part 1: Intrinsic characteristics of sound absorption