????:1???????????:?????????

2????????

3?????vx

4?????

5???????

??2????21?? (??? ??)????????????????1??,??168??,???????????????????????????????????????????????????;???????????????????????????????????????????????????????????????????????????

???21??1??,??339????(PM2.5)????53.1??/?????????,?????????4.7%;??(PM10)??80??/??????,????????8.1%???339?78.0%,??0.5???

1????,??“2+36”????????????PM2.5?61.0??????/??,??18.3%;?68.5%,???7.4??;??2.9%,???6.8??????1??,??PM2.5???28.3???????/?????,??????23.5%?

1???,168??:PM2.5??20??????????????????????????????????????????????????????????????????????????????;PM2.5??20??????????????????????????????????????????????????????????????????????????(??) ???:???