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negative meniscus /ˈnɛɡətˌɪv ˈmɛnɪskəs/ n

中文：负弯月透镜

中文 · 负弯月透镜Español · menisco divergenteFrançais · ménisque divergent
Meaning：Lens where the concave side (curving inward) is more pronounced than the convex side (bulging outward).
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Concave lens

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