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![Magnifying glass - Wikipedia, the free encyclopedia](https://www.iarticlesnet.com/pub/img/site/s_21.jpeg)
Magnifying glass - Wikipedia, the free encyclopedia
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日期:2024-07-11
A magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle (see image). A sheet magnifier consists of many very narrow concen...看更多