China 'GB/T 3222.2-2009
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 3222.2-2009
Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of environmental noise levels 声学 环境噪声的描述、测量与评价 第2部分:环境噪声级测定
Issued Date:2009-09-30
Implemented Date:2009-12-01
Issued by:
The Standardization Administration of the People's Republic of China