{HEAD ~ The cyclone} 8a is connected with 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 
is connected through
{ HEAD ~ The cyclone } 8a is connected with 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
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH