The heating temperature of the electrical heating wires 22 is set to a temperature below the melting point of the glass constituting the cathode ray tube and a temperature which causes {HEAD ~ quick heat strain} locally in {TAIL ~ the glass} 
The heating temperature of the electrical heating wires 22 is set to a temperature below the melting point of the glass constituting the cathode ray tube and a temperature which causes { HEAD ~ quick heat strain } locally in { TAIL ~ the glass }
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 OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL