In recent years, domestic and international scholars studying the source of PM2.5 emissions have reached the common conclusion that motor vehicle emissions are one of the most important PM2.5 sources (Wang et al., 2006; Wang et al., 2012; Yu et al., 2013). The motor vehicle emissions can be controlled relatively easier by scientific mechanisms.
In recent years, domestic and international scholars studying the source of PM2.5 emissions have reached the common conclusion that motor vehicle emissions are one of the most important PM2.5 sources (Wang et al., 2006; Wang et al., 2012; Yu et al., 2013). The motor vehicle emissions can be controlled relatively easier by scientific mechanisms.
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