DIN EN ISO 389-9 (2009-12) 标准详情
- 标准号:DIN EN ISO 389-9 (2009-12)
- 中文标题:
- 英文标题:Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO 389-9:2009)
- 标准类别:德国标准DIN
- 发布日期: