A memory stores a predetermined relationship between the possible offset and a parameter which controls {HEAD ~ the application} of {TAIL ~ heat} 
of
A memory stores a predetermined relationship between the possible offset and a parameter which controls { HEAD ~ the application } of { TAIL ~ heat }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL