self oiling block

例句：

1. 1.The self-lubricating block in the engine helps to reduce friction and improve efficiency.
   发动机中的自润滑块有助于减少摩擦并提高效率。
2. 2. The engineer designed a self-lubricating block that can be easily replaced without affecting the overall function of the machine.
   工程师设计了一种自润滑块，可以方便地更换而不会影响到机器的整体功能。
3. 3.The self-lubricating block is an essential component of many industrial machines, ensuring smooth operation and long lifespan.
   自润滑块是许多工业机器的必备部件，确保了机器的平稳运行和持久耐用。