... 瞬时视场角 IFOV 望远镜视场角 angle of view of telescope 正常视场角物镜 angel objective ...
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... 望远镜瞄准镜 telescope; telescopic sight; 望远镜视场角 opening of the telescope; 望远镜调整圈 telescope collar; ...
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通过望远镜你所能看到的天空的范围称作真实视场，以弧度值(角视场)来度量。
The amount of sky that you can view through a telescope is called the real (true) field of view and is measured in degrees of arc (angular field).
借助平行光和双面反射镜，对分光计望远镜的视场角进行了分析和测量，并通过实验得出了结果。
With the help of the ray of equal rank and double-faced reflector, the telescopic visual angle of the spectrometer was analyzed and measured. And the conclusion was drawn.
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