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In this paper, we discuss six theorems of the stability on minimal focal surface.
本文给出了伪球率线汇极小焦面稳定性的六个定理。
The imaging focal surface is equipped with 4000 optical fibers which can do automatically positioning and is connected with 16 spectrometers to do real time recording.
成像的焦面上装着4000根可自动定位的光纤，连接16台光谱仪实时记录数据。
A method is introduced for testing stray light coefficient, vignetting coefficient and image surface uniformity optical system with large aperture and long focal length.
叙述一种用于测试大口径、长焦距光学系统杂光系数、渐晕系数、像面照度均匀性等光学参数的检测方法。
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