2.5D是一个在不同学科有不同意思的名词。以下为几个常见的解释:

  • 伪三维,二维(2D)画面中所应用的技术,使得图像或场景有着三维(3D)视觉效果。
  • 在数学中一种非整实数空间维度,见豪斯多夫维(Hausdorff dimension)。

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