crankshaft balancer

例句：

1. 1.The engine needs to be balanced regularly toensure smooth operation.
   发动机需要定期平衡以确保顺畅运行。
2. 2. The balancer is responsible for maintainingthe proper alignment of the crankshaft.
   平衡器负责保持曲轴的正确对齐。
3. 3. The balancer is a critical componentthat ensures the engine runs smoothly.
   平衡器是一个重要的组件，确保发动机平稳运行。