国家环境空气质量标准
national ambient air quality standard
全国环境空气质量标准
national ambient air quality standards
NAAQS
国家环境空气质量目标
national ambient air quality objective
环境空气质量
ambient air quality
environmental air quality
air quality
quality of atmosphere
air environmental quality
atmospheric environmental quality
quality of air-environment
环境空气质量和谐度
Harmonious Degree of Ambient Air Quality
环境质量标准
environmental quality standard
Environmental quality standards
ambient quality standard
ambient quality standards
空气环境质量
quality of atmospheric environment
Atmospheric quality
ambient air quality
土壤环境质量标准
soil environmental quality standard
Soil environmental quality standards
soil environmental quality index
soil quality standards
soil environment quality standards
soil quality standard
environmental quality standard for soil
微环境空气质量
air quality in micro-environment
国家空气质量标准
national ambient air quality standards
室内空气质量标准
indoor air quality standard
周围空气质量标准
ambient air(water etc)quality standard
标准气环境
reference gas environment
城市工程地质环境质量
urban engineering geological environment quality