id	keyword
fumecheng-3813	air
fumecheng-3813	heat
fumecheng-3813	recovery
fumecheng-3813	energy
fumecheng-3813	fig
fumecheng-3813	enthalpy
fumecheng-3813	exhaust
fumecheng-3813	data
fumecheng-3813	total
fumecheng-3813	average
fumecheng-3813	time