This automotive head up diaplay is abbreviated to HUD and short for head up display,with the meaning of "look-up displaydevice",or"look-at-the-fron-horizontally display device".It can project important information(e,g,vehicle speed )onto the front windshield at the eye level of the driver and thus help to make their driving safe and sound wwhen driving ay a high speeed ,especially at night without loweing their heads.
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