The time for applying the current to {HEAD ~ the electrical heating wires} 2 to split {TAIL ~ the cathode ray tube} 6 is not particularly limited, but may be several tens of seconds to several minutes 
to split
The time for applying the current to { HEAD ~ the electrical heating wires } 2 to split { TAIL ~ the cathode ray tube } 6 is not particularly limited , but may be several tens of seconds to several minutes
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH