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