The emission control system is required by law to reduce the airpollution the engine could produce.
排放控制系统按法规要求来降低发动机可能产生的空气污染。
2
Because environmental protection law and airpollution prevention law are both about pollution management and controlling which embody the idea of end treatment.
由于环保法到大气污染防治法等环境法律，全部都是污染管理与控制方面的法律，体现了末端治理的思想。
3
Results: The main channel of atmospheric pollution and the law governing the changes in concentration were summed up and a proposal for the control of air quality in the compartments was advanced.