In the fabrication of bodies of the ceramic {HEAD ~ the mixture} of {TAIL ~ the insulating substances} is coated or otherwise layered on polycrystalline ceramic bodies prepared from the primary and secondary ingredients 
of
In the fabrication of bodies of the ceramic { HEAD ~ the mixture } of { TAIL ~ the insulating substances } is coated or otherwise layered on polycrystalline ceramic bodies prepared from the primary and secondary ingredients
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH