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