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.

本文首先推导出平律渐变光纤中,近轴子午光迹程。

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.

置作品聚焦圣经中最具有代表性一页中一句话，投射到一面墙上。