self-lubricator

例句：

1. 1.This self-lubricator is designed to reduce friction between moving parts.
   这个自润滑器设计用来减少移动部件之间的摩擦。
2. 2. The self-lubricating material can be used in various applications where smooth movement is required.
   这种自润滑材料可以用于各种需要平滑运动的场合。
3. 3.The engineers found that the self-lubricating device significantly improved the performance of the machine.
   工程师们发现，自润滑装置显著提高了机器的性能。