| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 21228.2-2023 | English | 384 |
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Days<=4
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Acoustics - Sound-scattering properties of surfaces - Part 2: Measurement of the directional diffusion coefficient in a free field
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GB/T 21228.2-2023
| Valid |
GB/T 21228.2-2023
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