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