affine sphere

例句：

1. 1.The affine sphere is a mathematical concept that describes the shape of a three-dimensional object when viewed from a single point.
   仿射球面是一个数学概念，它描述了从一点观察三维物体时的形状。
2. 2.In computer graphics, an affine sphere is used to represent the surface of a model object, allowing for easy transformations and manipulations.
   在计算机图形学中，仿射球面用于表示模型对象的表面，使得变换和操纵变得容易。
3. 3. The affine sphere is also used in physics to describe the motion of objects within a gravitational field.
   仿射球面也在物理学中用于描述物体在引力场中的运动。