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机译:
Hulunbuir Univ;
Mongolian Natl Univ Educ;
Hulunbuir UnivInner Mongolia Normal UnivChifeng Univ;
air quality; particulate matter; gaseous pollutants; impact factors; correlation analysis; PARTICULATE POLLUTION; TEMPORAL VARIABILITY; PM2.5/PM10 RATIO; URBAN; URBANIZATION; QUALITY; HEALTH;