self-lubricating spherical plain bearings

• 自润滑轴承

self-lubricating spherical plain bearings的用法和样例：

例句

1. The purpose of lubrication bearings is to reduce the friction.
   润滑轴承是为了减少摩擦。
2. The high-tech bearings are permanently lubricated via an autonomous, dedicated oil reservoir.
   高科技永久润滑轴承是通过一个独立的，专门的油藏。