synchronous rolling

例句：

1. 1. The car's synchronous rolling gears are responsible for its smooth acceleration.
   汽车的同步旋转齿轮负责其平滑加速。
2. 2. The machine's synchronous rolling mechanism ensures precise timing in assembly processes.
   机器的同步旋转机制确保了装配过程中的精确时间同步。
3. 3. The synchronous rolling wheel is used to rotate heavy materials, such as logs and rocks.
   同步旋转轮用于旋转重材料，如木材和岩石。