DIN EN IEC 60704-2-7:2020
家用和类似用途电器. 测定空气声噪声的试验规范. 第2-7部分: 风扇的特殊要求(IEC 60704-2-7-2020); 德文版 EN IEC 60704-2-7-2020
Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-7: Particular requirements for fans (IEC 60704-2-7:2020); German version EN IEC 60704-2-7:2020