capstan PWM generator

例句：

1. 1.The car's engine is located at the center of the capstan.
   汽车的发动机位于中心轴上。
2. 2.The engineer carefully adjusted the capstan to ensure smooth operation.
   工程师仔细调整了中心轴以确保运转顺畅。
3. 3.The construction worker used a hammer to remove the old capstan and replace it with a new one.
   建筑工人用锤子拆除旧的轴承并用新的替换。