The traffic on the road is heavy, the car exhaust emissions are high, and it contains a lot of pM2.5. The environment in the community is clean and there is more greenery. The concentration of pM2.5 should be less than that on the road.
Road traffic is busy, car exhaust emissions more, containing a large number of pM2.5, clean environment in the small area, green more, pM2.5 concentration should be less than on the road
The traffic on the road is busy, the exhaust emission of vehicles is more, and it contains a lot of PM2.5. The environment in the community is clean and tidy, and there are more greening. The concentration of PM2.5 should be less than that on the road<br>