备用润滑油泵
emergency bearing oil pump
不正确的最终传动润滑油油面
incorrect final drive oil level
铲运机传动系润滑油油面
scraper transmission oil level
车用润滑油的再生研究
Rebirth research of vehicle lubricating oil
反冲分隔间润滑油油面
recoil compartment oil level
滚筒驱动齿轮箱润滑油油面
roller drive gearbox oil level