Also known as: hd.
HD has various meanings in the Technology category. Discover the full forms, definitions, and usage contexts of HD in Technology.
A cockpit system where data from flight instruments is projected onto a screen or the wind-screen so that the pilot can see it with-out having to look down.
TechnologyA device which can detect a fire, or a considerable change in temperature, as a result of the action of heat on a sensing element.
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