self oiling bearing

• 自润滑轴承

self oiling bearing的用法和样例：

例句

1. It would cause great trouble not to lubricate the bearing immediately.
   不立即润滑轴承就会引起很大的故障。
2. It is necessary to find other materials to replace copper as crustaceous material of water-lubricated bearing.
   迫切需要找出替代铜做水润滑轴承外壳的材料。