【国外标准】 Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO/CD 389-9:2005)
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2025-06-05
- DIN ISO 389-9
- 废止
- 定价:
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适用范围:
暂无
标准号:
DIN ISO 389-9
标准名称:
Acoustics - Reference zero for the calibration of audiometric equipment - Part 9: Preferred test conditions for the determination of reference hearing threshold levels (ISO/CD 389-9:2005)
英文名称:
标准状态:
废止-
发布日期:
2001-07-01 -
实施日期:
出版语种:
英语
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