China 'GB/T 34877.4-2024
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 34877.4-2024
Industrial fans-Determination of sound power level of fans under standard laboratory conditions-Part 4: Sound intensity method 工业风机-标准实验室条件下风机声功率级的测定-第4部分：声强法
Issued Date:2024.5.28
Implemented Date:2024.12.1
Issued by:
The Standardization Administration of the People's Republic of China
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