GB/T 7584.3-2011
China national
standard english version:
GB
中华人民共和国国家标准
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