The reflection and refraction of light on the rotational ellipsoid is studied, The general equations on image are obtained and disscused.

研究了光在旋转抛物面上反射与折射的一般性质，得到了相应的近轴成象公式。

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Her work is often minimal, impinging on us often through the use of light, its reflection and refraction, to evoke feelings of wonder.

她的作品通常极其微小，通过运用光的反射和折射对观众产生影响，激发好奇之感。

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Through the methods of reflection refraction and accumulation the light could be well-proportioned to be the best way of transmission from light-line to light face.

通过对光的反射、 折射和累加达到均匀的平面发光效果，用最快捷的办法实现线光源到面光源的转变。

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