BS 848-2-1985 标准详情
- 标准号:BS 848-2-1985
- 中文标题:普通风扇.第2部分:噪声试验方法
- 英文标题:fans for general purposes. methods of noise testing
- 标准类别:英国标准
- 发布日期:1985-12-31
Determination of the acoustic performance of fans operating against difference of pressure. Four methods are described- in-duct, reverberant field, free field and semi-reverberant. Illustrations are given of suitable test ducting and anechoic termina
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