After {HEAD ~ deposition} of a silicon nitride layer and an insulation glass layer on {TAIL ~ a substrate} coating semiconductor devices, the contact windows are etched 
on
After { HEAD ~ deposition } of a silicon nitride layer and an insulation glass layer on { TAIL ~ a substrate } coating semiconductor devices , the contact windows are etched
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH