channeled oil ring

例句：

1. 1.The oil ring is a crucial component inthe production process.
   油环是生产过程中的关键组件。
2. 2.The oil ring was used to seal thejoints in the pipeline.
   油环用于密封管道中的接头。
3. 3. The oil ring was damagedduring the transportation process.
   在运输过程中，油环受损了。