Definition(s)
Levels of air pollutants prescribed by regulations that may not be exceeded during a specified time in a defined area. (Source: Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997)
层级
Broader: Air quality
Related concepts from Law and Environment Ontology:
In other languages
French
norme de qualité de l’air
Russian(俄语)
стандарт качества воздуха
Spanish
norma de calidad del aire
Arabic(阿拉伯语)
معيار نوعية الهواء
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