osculating sphere

例句：

1. 1. The engineer designed a new osculating sphere that could reduce the wear on the machine.
   工程师设计了一种新型的周转球体，可以减轻机器的磨损。
2. 2. The scientist used the osculating sphere to study the motion of particles in a fluid.
   科学家使用周转球体研究流体中粒子的运动。
3. 3.The physicist explained how the osculating sphere works to explain the phenomenon of light refraction.
   物理学家解释了周转球体是如何工作的，来解释光折射的现象。