self-oiling bearing

例句：

1. 1.The new self-oiling bearings are much more reliable than the old ones.
   新的自润滑轴承比旧的更可靠。
2. 2.The engineer designed a self-oiling bearing to reduce friction and extend life.
   工程师设计了一种自润滑轴承，以减少摩擦并延长使用寿命。
3. 3. The self-oiling bearing is essential for maintaining smooth operation of the machine.
   自润滑轴承对于保持机器平稳运行至关重要。