straight-line motion mechanism

例句：

1. 1.The straight-line motion mechanism is responsible for the smooth operation of the machine.
   直线运动机构负责机器的平稳运行。
2. 2. The engineer designed a straight-line motion mechanism to improve the efficiency of the production line.
   工程师设计了一个直线运动机构，以提高生产线的效率。
3. 3.The straight-line motion mechanism was used in the new car design to enhance its performance.
   在新型汽车设计中采用了直线运动机构来提升性能。