{HEAD ~ a color display device} of the type wherein {TAIL ~ the color} of light emitted by a phosphor screen is changed in accordance with an electron accelerating voltage applied thereto 
wherein
{ HEAD ~ a color display device } of the type wherein { TAIL ~ the color } of light emitted by a phosphor screen is changed in accordance with an electron accelerating voltage applied thereto
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH