involute spline

例句：

1. 1.The machine has a mechanism that uses an involute spline to rotate the workpiece.
   这台机器有一个机制，使用蜗形花键来旋转工件。
2. 2.The engineer designed the involute spline to fit perfectly into the hole.
   工程师设计了蜗形花键，完美地适配到孔中。
3. 3. The involute spline is used in many industrial applications to ensure smooth movement of parts.
   蜗形花键在许多工业应用中被使用，以确保部件的平滑运动。