After this, a constant current is applied to the electrical heating wires 22 at {HEAD ~ a constant voltage} so as to split {TAIL ~ the cathode ray tube} 6 along the electrical heating wires 22 
to split
After this , a constant current is applied to the electrical heating wires 22 at { HEAD ~ a constant voltage } so as to split { TAIL ~ the cathode ray tube } 6 along the electrical heating wires 22
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH