ovally grooved seal face

例句：

1. 1. The ovally grooved seal face is designed to prevent leaks in the oil pipeline.
   这种凹槽密封面设计用来防止油管中的泄漏。
2. 2.The engineer used a special tool to remove the ovally grooved seal face.
   工程师使用一种特殊的工具来去除凹槽密封面。
3. 3.The new design of the ovally grooved seal face has improved the efficiency of the machinery.
   新设计的凹槽密封面提高了机器的效率。