adjustment washer

例句：

1. 1. The car needs an adjustmentwasher to make it run smoothly.
   这辆车需要调整器来让它运行顺畅。
2. 2.The engineer used the adjustment washer totune up the engine.
   工程师使用调整器来调校发动机。
3. 3. The new model hasa built-in adjustment washer foreasy maintenance.
   新款模型内置了易于维护的调整器。