The cyclone 8a is connected with {HEAD ~ the indoor institution B} through {TAIL ~ a piping} 28 in the midway of which the ultraviolet generator 9 and the temperature regulator 10 are disposed 
The cyclone 8a is connected with { HEAD ~ the indoor institution B } through { TAIL ~ a piping } 28 in the midway of which the ultraviolet generator 9 and the temperature regulator 10 are disposed
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH