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secondary mirror

查词链接:https://www.dute.org/dict/secondary_mirror复制链接
n.
[光] 副镜
查看英英释义
abstract:
A secondary mirror (or secondary) is the second deflecting or focusing mirror element in a reflecting telescope. Light gathered by the primary mirror is directed towards a focal point typically past the location of the secondary.

网络释义
副镜
... secondary focus 次级焦点 secondary mirror 副镜 secondary optical axis 副光轴 ...
常用短语
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