[ C ]electronicsspecialized阴极射线管(cathode ray tube的缩写)
abbreviation forcathode ray tube: a tube-shaped part in a television or computer screen, inside which a continuous flow of electrons is produced to create images or text
This LCD screen is much brighter than my old CRT.
a CRT display/monitor/processor
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It could be that the CRT is deteriorating, so it looks fuzzy and your eyes struggle to focus.
These old-fashioned boards were not capable of displaying more than 64 characters per line on the CRT.
Select the external CRT display.
It is unusual for a CRT monitor to flicker only in one corner.