本文重点分析屏幕刷新率对实验设计的限制及可能产生的计时误差和解决方法。
This article mainly analysed the limit of the screen refresh rate to the experimental design and the timing error that might occur, as well as the methods for solving these problems.
这三种特性是：屏幕大小，像素点和刷新率。
These three characteristics are: screen size, the dot and refresh rate.
刷新率表示显示器每秒重复显示屏幕图像的次数。
The refresh rate indicates how many times per second the monitor cycles through the screen images.
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