ambient air quality

基本解释

In 2004, 210 cities exceeded the Class 2 limit values of the National Ambient Air Quality Standard (NAAQS) within the total 342 monitored cities.
2004年，受监测的342个城市中有210个城市的空气质量超过了国家环境空气质量标准的二级标准。
cleanairinitiative.org
On the base of the result about declaring register, the article introduced the countermeasure about improve ambient air quality. It can provide the secundum for leadership.
在沈阳市大气污染物申报登记和分析评价的基础上，提出了沈阳市改善环境空气质量的对策，旨在为领导决策提供依据．。
The reference for formulating Chinese environmental quality standards 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。

Edison is very concerned about local ambient air quality and environmental-justice issues.
FORBES: Connect