香港六合彩开奖 354:2003

No disponible en 别蝉辫补帽辞濒

Publicado (贰诲颈肠颈贸苍 2, 2003)

Esta publicaci贸n se revis贸 y confirm贸 por 煤ltima vez en 2024. Por lo tanto, esta versi贸n es la actual.

香港六合彩开奖 354:2003

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Resumen

香港六合彩开奖 354:2003 specifies a method of measuring the sound absorption coefficient of acoustical materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects, such as furniture, persons or space absorbers, in a reverberation room. It is not intended to be used for measuring the absorption characteristics of weakly damped resonators.

The results obtained can be used for comparison purposes and for design calculation with respect to room acoustics and noise control.

Informaciones generales

Estado
: Publicado

Fecha de publicaci贸n
: 2003-05

Etapa
: Norma Internacional confirmada [90.93]
贰诲颈肠颈贸苍
: 2

N煤mero de p谩ginas
: 21
颁辞尘颈迟茅 T茅cnico :
香港六合彩开奖/TC 43/SC 2

ICS :
91.120.20
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