Pic Title: Categories reflecting telescope Related Phrase: 反射望远镜: 反射望远镜的基本分类 Source: http://image.wangchao.net.cn/ Pic Description: 　　Reflecting telescope - Dynasty Internet -. Wangchao Cassegrain telescope Cassegrain telescope is composed of two mirrors composed of a reflecting telescope, 1672 was jam Translated by Google No. / 25426 Picture               Slide Show

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