To study the structure of telecentric beam path for zoom lens system, the axial displacement equation for the stop was deduced, which keep the system telecentric in all zoom position.
进一步研究变焦距系统远心光路的结构特征，得出了使系统在整个变焦过程中都处于远心位置的光阑轴向位移方程。
In computer graphics, the application of a constant displacement to the position of one or more display elements.
在计算机图形学中，把一个常量位移加到一个或几个显示单元的位置上的功能。
The graphs for the displacement, energy and the trajectory of the bob are gotten by recording the position of the bob in real time under different initial conditions.
通过实时记录摆球的位置，得到了不同初始条件下，弹簧摆振动的位移曲线、能量曲线和摆球运动的轨迹。
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