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