| http://www.w3.org/ns/prov#value | - The curved-surface CRT having a curved outer surface is decreasing in its demand due to problems such as an image distortion and an eye fatigue due to a light reflection, while the flat CRT (FCD) is increasing in its demand thanks to its advantages that an image is not distorted, reflection by an external light is minimized and a visible region is maximized.
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