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放大镜

出自维基百科,自由个百科全书

放大镜(Magnifying glass)是用以放大物体凸透镜,显微镜个雏形。放大镜图标常常被用作指示搜索个用场。

放大透镜个历史可追溯到古埃及,约公元前五世纪,以埃及个象形文字表示“一片玻璃透镜”。

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