【国外标准】 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994); English version FprEN ISO 3744:2009, Amendment 1
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2025-06-05
- DIN EN ISO 3744/A1
- 废止
- 定价:
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适用范围:
暂无
标准号:
DIN EN ISO 3744/A1
标准名称:
Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering method in an essentially free field over a reflecting plane (ISO 3744:1994); English version FprEN ISO 3744:2009, Amendment 1
英文名称:
标准状态:
废止-
发布日期:
2001-05-01 -
实施日期:
出版语种:
英语
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