id	keyword
fumecheng-13163	particles
fumecheng-13163	acoustic
fumecheng-13163	agglomeration
fumecheng-13163	frequency
fumecheng-13163	velocity
fumecheng-13163	khz
fumecheng-13163	increase
fumecheng-13163	study
fumecheng-13163	impact
fumecheng-13163	number
fumecheng-13163	frequencies