double-lift cam

例句：

1. 1. The double-lift cam is used in the manufacturing process to ensure accurate positioning of parts.
   双提升凸轮在制造过程中用于确保零件的准确定位。
2. 2. In this assembly line, the double-lift cam controls the movement of the robot arm.
   在这个装配线上，双提升凸轮控制机器人臂的运动。
3. 3.The double-lift cam has proven to be an effective solution for improving precision and efficiency in the assembly process.
   双提升凸轮已被证明是提高装配过程精度和效率的有效解决方案。