Joint;
Key;
Laboratory;
of;
Environmental;
Simulation;
and;
Pollution;
Control,;
College;
of;
Environmental;
Sciences;
and;
Engineering,;
Peking;
University,;
Beijing;
100871,;
China;
Research;
Academy;
of;
Environmental;
Sciences,;
Beijing;
100012,;
China;
residential; combustion; coal; crop; residue; briquette; emission; factors; gaseous; carbonaceous; species;