内部润滑指数
internal lubrication index
气缸上部润滑
upper cylinder lubrication
叶轮端部润滑油密封环
impeller end oil seal ring
制动器润滑部分
brake lubrication section
brake lube section
固体润滑滑动轴承
bearing with solid lubricant
镶嵌固体润滑滑板
embeded solid lubrication slipper
自润滑滑动轴承
self lubricating sliding bearings
Self-lubricating Bearing
Self-lubricated sleeve bearing
自润滑滑块技术
technology of self-lubricating pad
technology of self-lubricating p ad