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