将纹理坐标命名为(s, t)是为了与用于表示顶点位置的(x, y)区分开来(从文字角度来讲，(u, v)更为常用)。
Texture coordinates are named (s, t) in order to distinguish them from the (x, y) used for vertex positions (in literature, (u, v) is commonly used instead).
能动磨盘在光学抛光时随磨盘移动位置和旋转角度不同而产生不同的变形以实时与大口径被抛光工件表面实现良好的吻合。
In optics polishing process, the active lap can reshape the profile for fitting the surface of large optical component with different local position and rotating Angle in real time.
位置显示单位为可视化的角度编码器或测量值与线性编码器，长度计，旋转编码器。
Position display units serve to visualize the values measured with linear encoders, length gauges, rotary encoders or Angle encoders.
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