China 'GB/T 7584.3-2011
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 7584.3-2011
Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture 声学 护听器 第3部分：使用专用声学测试装置 测量耳罩式护听器的插入损失
Issued Date:2011-12-30
Implemented Date:2012-05-01
Issued by:
The Standardization Administration of the People's Republic of China
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