Here, {HEAD ~ the stagnation room} is disposed between the first bottom of the first cyclone unit and {TAIL ~ the second ceiling} of the second cyclone unit 
is disposed between
Here , { HEAD ~ the stagnation room } is disposed between the first bottom of the first cyclone unit and { TAIL ~ the second ceiling } of the second cyclone unit
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH