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| 单词 | aldis lens |
| 释义 | > as lemmasAldis lens Aldis lens n. Optics (now chiefly historical) a kind of anastigmatic compound lens that is a doublet consisting of a front lens which is convex on one side and concave on the other and a back lens which is convex on both sides.extracted from Aldisn.< as lemmas |
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