self-lubricating bearing

例句：

1. 1. The self-lubricating bearings in the machine are designed to reduce friction and improve efficiency.
   机器中的自润滑轴承设计用来减少摩擦并提高效率。
2. 2. In order to maintain the smooth operation of the machine, it is important to replace the worn out self-lubricating bearings regularly.
   为了保持机器的平稳运行，定期更换磨损的自润滑轴承非常重要。
3. 3. The engineer carefully inspected the self-lubricating bearings to ensure they were functioning properly before installing them onthe machine.
   工程师仔细检查了自润滑轴承，以确保它们在安装到机器上之前正常工作。