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