The reference for formulating Chinese environmental qualitystandards is provided by analyzing the formulating procedure and process on ambient air quality standard in EC.
通过分析欧盟环境空气质量标准的制订过程,为我国环境质量标准的制订提供参考与借鉴。
2
NAAQS (National Ambient Air QualityStandards) define attainment and protect human health by setting a limit on SO2 concentration nationwide.