inner hyperboloid

例句：

1. 1.The inner hyperboloid of the planet Mercury is a fascinating feature of its surface.
   水星的内双曲面是一个令人着迷的表面特征。
2. 2. In mathematics, the inner hyperboloid is a curve that describes the shape of the Earth's surface at high altitudes.
   在数学中，内双曲面是描述地球表面在高海拔处的形态的曲线。
3. 3. The inner hyperboloid is also used in astronomy to describe the shape of the Moon's surface.
   内双曲面也在天文学中用于描述月球表面的形态。