The square regulation graded index fiber is considered to have fairly good dispersion property because the near axle meridian light in the fiber may focalize automatically.

本先推导出平律渐变光纤,近轴子午光线轨迹程。

In my display, I focalize the light cast by the equipment on the sentence in the most representative page of the Bible and project it onto a wall.

我装置作品聚焦圣经最具有代表性页句话，投射到面墙上。