Radiotelescopes create pictures of the sky, not in visible light, but in radio waves.
射电望远镜拍摄的天空图片不是可见光,而是无线电波。
2
Radiotelescopes are sometimes grouped together, is the same effect as having one big telescope to increase radio wave gathering power.
射电望远镜有时会被组合在一起,这与使用一个大望远镜来增加无线电波的收集能力是一样的。
3
To avoid interferences, and keep the telescopes sensitive, radiotelescopes are built in places where there are no human radio waves or electronic signals.