crankshaft bearing metal

例句：

1. 1. The engine's crankshaft bearing needs to be replaced regularly toensure smooth operation.
   发动机的曲轴轴承需要定期更换，以保证运行顺畅。
2. 2. The engineerinspected the crankshaft bearingand found no signs of wear or damage.
   工程师检查了曲轴轴承，发现没有磨损或损坏的迹象。
3. 3. The newcrankshaft bearingis designed to last longer thanthe old one, reducing maintenance costsin the long run.
   新型曲轴轴承设计使用寿命更长，长期来看可以降低维护成本。