source of air pollutant meaning in Chinese

空气污染物的来源
空气污染物源

Coal - fired power plants in hong kong and mainland china are sources of air pollutants in the region
本港及内地燃煤发电厂都是区域性的空气污染源之一。
The source of air pollutants in kitchen and their harm are analyzed , and measures for improving the air quality in kitchen are put forward
摘要分析了厨房内空气污染物的来源及其危害，提出了改善厨房空气品质的措施。