equiangular spiral

例句：

1. 1. The equiangular spiral is a mathematical concept that describes the shape of a circle when viewed from an oblique angle.
   等角螺旋是一种数学概念，它描述了从斜角观看时圆形的形状。
2. 2. In physics, the equiangular spiral is used to describe the rotational motion of a particle arounda fixed axis.
   在物理学中，等角螺旋用于描述粒子围绕固定轴的旋转运动。
3. 3. The equiangular spiral is also used in navigation systems to help determine the direction and distance traveled by a vessel.
   等角螺旋还在导航系统中被用来帮助确定船舶行驶的方向和距离。