{TAIL ~ A resin layer} formed of a thermosetting resin is arranged on each of {HEAD ~ the yokes} 
{ TAIL ~ A resin layer } formed of a thermosetting resin is arranged on each of { HEAD ~ the yokes }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD