More specifically, electrical heating wires are disposed at the two sides of the scratch formed on the cathode ray tube and {HEAD ~ the electrical heating wires} are used to apply the heat in a linear manner from {TAIL ~ the two sides} of the scratch 
More specifically , electrical heating wires are disposed at the two sides of the scratch formed on the cathode ray tube and { HEAD ~ the electrical heating wires } are used to apply the heat in a linear manner from { TAIL ~ the two sides } of the scratch
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH