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