NEN ISO 5136-1994 标准详情
- 标准号:NEN ISO 5136-1994
- 中文标题:声学 - 测定声功率辐射入管道的球迷 - 在风道法
- 英文标题:Acoustics - Determination Of Sound Power Radiated Into A Duct By Fans - In-duct Method
- 标准类别:荷兰国家标准NEN
- 发布日期:
Gives a method for testing ducted fans to determine the sound power radiated into an anechoically-terminated duct on the inlet and/or outlet side of the equipment. Applicable to fans which emit steady, broadband, narrow-band and discrete-frequency so
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