However, if you change the refresh rate to a setting that the display or video card cannot support, the display goes blank or the image becomes distorted.
然而，如果你改变的刷新率设置显示器或显卡不支持，显示一片空白或图像变得扭曲。
But in the raster graphic display system, scale lines and character will be distorted seriously owe to the limited screen resolution in the case of deflection, which affect the display quality.
而硬件系统采用的是光栅图形显示，字符和刻度线的旋转受屏幕分辨率的限制存在着锯齿走样现象，影响显示效果。
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