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| International Standard Category: Noise emitted by machines and equipment |
GB/T 21231-2007 Acoustics - Method for the measurement of airborne noise emitted by small air-moving devices
声学 小型通风装置辐射空气噪声的测量方法;
| Category No.: | 17.140.20 | Valid Status: | superseded |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| Superseded Standard.: | GB/T 21231.1-2018 Acoustics—Measurement of airborne noise emitted and structure-borne vibration induced by small air-moving devices—Part 1: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Superseded Date: | 2018-10-1 |
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