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1. Oxford Dictionary

   concave

   • IPA[ˈkɒnkeɪv]

   英式

   • adj.
     having an outline or surface that curves inwards like the interior of a circle or sphere
2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. having an outline or surface that curves inwards like the interior of a circle or sphere concave lenses

   convexo-concave

   • adj.
     (of a lens) convex on one side and concave on the other and thickest in the center.

   Oxford American Dictionary

   concavo-concave

   • adj.
     another term for biconcave

   Oxford American Dictionary

   plano-concave

   • adj.
     (of a lens) with one surface plane and the opposite one concave.

   Oxford American Dictionary

   convexo-concave

   • adj.
     (of a lens) convex on one side and concave on the other and thickest in the centre.

   Oxford Dictionary

   concavo-concave

   • adj.
     another term for biconcave

   Oxford Dictionary

3. • 更多解釋

   concave

   • IPA[ˈkänˌkāv]

   美式

   • adj.
     having an outline or surface that curves inward like the interior of a circle or sphere: concave lenses

   Oxford American Dictionary