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yazhuge:前面加镜片,类似施密特校正板那样的~ (2011-11-23 20:45) |};d:LwX
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jianqiang:视场角加大,只能用折反结构,纯反射结构视场角很小 (2011-12-08 23:05) 3y$6}Kp4?
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