折射望远镜剖面图
/ˈkɔːdləs ˈdɹɪldɹˈaɪvə/
n
English: cross section of a refracting telescope · 折射望远镜剖面图
释义：Magnification depends on the length of the main tube and the size and composition of the lens system.
English: cross section of a refracting telescope · 折射望远镜剖面图