和望远镜一样，它有一个曲面镜来聚集太阳光。
Like a telescope, it has a curved mirror to collect the sunlight.
大多数天线被制成碟形，用以收集和反射无线电波至亚反射器，就像曲面镜将可见光聚焦于一点一样。
Most antennas are made in the shape of a dish to collect and reflect the radio waves to the sub reflector, in the same way as a curved mirror focuses visible light to one point.
凯克望远镜采集和集中光线的大型镜片和南非大望远镜类似，是由一组小镜片拼接成的曲面镜。
The massive mirrors that collect and focus light are, like SALT's mirror, an array of smaller mirrors arranged on a perfectly formed curve.
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