intrinsic equation of a curve

例句：

1. 1. The intrinsic equation of the curve is crucial for solving the problem.
   曲线的内禀方程对于解决问题至关重要。
2. 2. The intrinsic equation of the curve is used to describe the shape of the object.
   曲线的内禀方程用于描述物体的形状。
3. 3. The intrinsic equation of the curve is derived from the laws of physics.
   曲线的内禀方程是从物理学定律推导出来的。