Home / Standards / GB/T 21230-2007 GB/T 21230-2007 Abolished Acoustics - Guidelines for the measurement and assessment of exposure to noise in a working environment 声学 工作环境中噪声暴露的测量与评价导则 Standard Type GBT ICS 17.140 CCS A59 Status 废止 Issue Date 2007-11-14 Implementation 2008-05-01 Responsible Dept 中国科学院 Drafting Unit 中国科学院