| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 4129-2025 | English | 434 |
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Acoustics - Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
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GB/T 4129-2025
| Valid |
GB/T 4129-2025
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