An electric coil 2 is disposed on the outside while {HEAD ~ a rotor} is disposed on {TAIL ~ the inside}, assisting in heating dissipation 
is disposed on
An electric coil 2 is disposed on the outside while { HEAD ~ a rotor } is disposed on { TAIL ~ the inside } , assisting in heating dissipation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH