bell shaped chain wheel

例句：

1. 1.The bell-shaped chain wheel is usedto control the speed of the conveyorbelt.
   铃形链条轮用于控制输送带的速度。
2. 2. The bell-shaped chain wheel isan important component of the machine'stransmission system.
   铃形链条轮是机器传动系统的重要部件。
3. 3. The bell-shaped chainwheel is designed to reduce wear and improveefficiency.
   铃形链条轮设计来减少磨损并提高效率。