{HEAD ~ Each} of the magnet and magnetic piece has {TAIL ~ an associated magnetic flux density}; the magnetic flux density generated by the magnet is larger than the saturation flux density around the magnetic piece 
{ HEAD ~ Each } of the magnet and magnetic piece has { TAIL ~ an associated magnetic flux density } ; the magnetic flux density generated by the magnet is larger than the saturation flux density around the magnetic piece
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH