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duanxy:用無焦模式,或者后面加理想透鏡 (2014-12-04 13:01) e^k!vk-SLF
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duanxy:理想透鏡當然是對平行光成像,平行光波前無像差則理想透鏡理想成像。 (2015-01-14 12:17) (~h7rAEc