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1. Oxford Dictionary

   curvature

   • IPA[ˈkəːvətʃ(ʊ)ə]

   英式

   • n.
     the fact of being curved or the degree to which something is curved；the degree to which a curve deviates from a straight line, or a curved surface deviates from a plane.

   • noun: curvature, plural noun: curvatures

2. • 釋義

   n.

   名詞

   • 1. the fact of being curved or the degree to which something is curved spinal curvature the curvature of the earth
   • ▪ the degree to which a curve deviates from a straight line, or a curved surface deviates from a plane.
   • ▪ a numerical quantity expressing curvature.