近年来，饮食业油烟污染已成为城市大气污染的主要来源之一。
Recently, cooking fume is one of the most important air pollution sources in many cities.
我国北方大气污染的主要来源是煤烟型污染，以tsp和SO_2污染为主。
In the north of China, airborne pollution derives from coal combustion emission, in which TSP and SO_2 are main pollutants.
作为大气污染气体的主要来源之一的固定污染源的烟气排放就成为监测和控制的重点。
As the main source of air pollution, flue gas emissions have become the focus of the monitoring and control.
本文通过大量资料，说明我国城市大气污染已到了非常严重的程度，而机动车排放是这一污染的主要来源。
Plenty of data, indicate that the air pollution has been very scions in the cities of China, and the main source of air pollution is the exhaust emission of motor vehicles.
本文通过大量资料，说明我国城市大气污染已到了非常严重的程度，而机动车排放是这一污染的主要来源。
Plenty of data, indicate that the air pollution has been very scions in the cities of China, and the main source of air pollution is the exhaust emission of motor vehicles.
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