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International Standard Category: Noise emitted by machines and equipment |
Category No.: | 17.140.20 | Valid Status: | superseded |
Issued Organization: | AQSIQ; SAC | Issued Date: | 2007-11-14 |
Implemented Date: | 2008-5-1 | Abolished Date: | |
Superseded Standard.: | GB/T 21231.1-2018 Acoustics—Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices—Part 1: Airborne noise measurement |
Superseded Date: | 2018-10-1 |
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