a buried magnet system comprising washer shaped magnets that are axially magnetized and positioned between {HEAD ~ washer} shaped {TAIL ~ iron pieces} 
shaped
a buried magnet system comprising washer shaped magnets that are axially magnetized and positioned between { HEAD ~ washer } shaped { TAIL ~ iron pieces }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL