资料来源 : Free On-Line Dictionary of Computing

refresh rate
     
         (Or "vertical refresh rate", "vertical scan rate")
        The maximum number of {frames} that can be displayed on a
        {monitor} in a second, expressed in {Hertz}.
     
        The scan rate is controlled by the vertical sync signal
        generated by the {video controller}, ordering the monitor to
        position the {electron gun} at the upper left corner of the
        {raster}, ready to paint another frame.  It is limited by the
        monitor's maximum {horizontal scan rate} and the {resolution},
        since higher resolution means more {scan lines}.  Increasing
        the refresh rate decreases flickering, reducing eye strain,
        but few people notice any change above 60-72 Hz.
     
        (1999-08-01)