Results for « 抛物 柱面 反射镜 » (cmn)
03888022-n
抛物 柱面 反射镜, 拋物面反射镜, 抛物柱面反射镜, 拋 物面 反射镜
parabolic reflector, paraboloid reflector
     a concave reflector used to produce a parallel beam when the source is placed at its focus or to focus an incoming parallel beam

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