crankshaft front bearing seal

例句：

1. 1.The engine's crankshaft front bearing seal is worn out, which affects its performance.
   发动机的曲轴前轴承密封磨损了，这影响了其性能。
2. 2. The technician replaced the worn-out crankshaft front bearing seal with a new one.
   技术人员用一个新的替换了磨损的曲轴前轴承密封。
3. 3. The engineer inspected the crankshaft front bearing seal to ensure it was functioning properly.
   工程师检查曲轴前轴承密封以确保其正常工作。