involutive ring

例句：

1. 1. The involute ring is a crucial component of the machine's design.
   回旋环是机器设计中至关重要的组成部分。
2. 2. The involute ring was used to reduce friction between the gears.
   回旋环被用来减少齿轮之间的摩擦。
3. 3. The involute ring has a significant impact on the overall performance of the machine.
   回旋环对机器的整体性能有显著影响。