UID:269064
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dhf19822:宽光束是从某一视场,然后经过全光阑的光线束 F]A~~P 细光束是从某一视场,围绕主光线附近的光线束(2014-02-05 23:06)嬀/color] ~!-8l&C
UID:297496
dhf19822:宽光束是从某一视场,然后经过全光阑的光线束 ;c X^8;F0 细光束是从某一视场,围绕主光线附近的光线束(2014-02-05 23:06)嬀/color] sWsG,v_