A quantity of glass is heated so that it will flow and transmit pressure following which the heated body is immersed in the heated glass and {HEAD ~ the flowable glass} is subjected to {TAIL ~ a pressure} high enough to further compact the body 
A quantity of glass is heated so that it will flow and transmit pressure following which the heated body is immersed in the heated glass and { HEAD ~ the flowable glass } is subjected to { TAIL ~ a pressure } high enough to further compact the body
OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH