BS ISO 17497-1:2004

Действует

Acoustics. Sound scattering properties of surfaces. Measurement of the random-incidence scattering coefficient in a reverberation room — 22 стр.

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Заменен

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Действует

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Действует

Zinc dust pigments for paints - Specifications and test methods — 16 стр.

Действует

Acoustics. Sound-scattering properties of surfaces. Measurement of the random-incidence scattering coefficient in a reverberation room — 22 стр.