In {TAIL ~ the exemplary embodiment}, {HEAD ~ the tube} is a nuclear fuel rod and the internal components are fuel pellets 
In
In { TAIL ~ the exemplary embodiment } , { HEAD ~ the tube } is a nuclear fuel rod and the internal components are fuel pellets
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH