primary mirror
英
美
- 主镜
双语例句
- With your eye close to the focuser, you can see the primary mirror reflected in the secondary, and the secondary and its spider in turn reflected in the primary.
把眼睛靠近调焦座，你会看见副镜中有主镜的反射像，而副镜和它的支架也在主镜中有反射像。
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