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，受監測的342個城市中有210個城市的空氣質量超過了國家環境空氣質量標準的二級標準。
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.
在沈陽市大氣汙染物申報登記和分析評價的基礎上，提出了沈陽市改善環境空氣質量的對策，旨在爲領導決策提供依據．。
The reference for formulating Chinese environmental quality standards is provided by analyzing the formulating procedure and process on ambient air quality standard in EC.
通過分析歐盟環境空氣質量標準的制訂過程，爲我國環境質量標準的制訂提供蓡考與借鋻。

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