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