It has an aluminized surface that reflects starlight to form an image at the focal plane.

表面镀铝膜，将星光反射到焦平面上成像。

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The results indicate that with the increase of focal length, the intensity distribution on the focal plane varies from central-dip form to Gaussian distribution.

结果表明：随着聚焦距离的增加，焦面光强分布由中央凹陷状向高斯分布转变。

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The focal points of the course, however, is not prominent; the form of listening training seems still simplistic, the author comments.

但也存在着重点不突出，听力训练形式单一等问题。

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The refurbished Matthew Steele Court will also form the focal point of a new social history initiative.

BBC: Falkirk Council finishes work on Bo'ness 'Coffin Blocks'