{HEAD ~ a cylindrical coil member} disposed coaxially within an inner space of {TAIL ~ the housing member} 
{ HEAD ~ a cylindrical coil member } disposed coaxially within an inner space of { TAIL ~ the housing member }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL