LEARNit Dictionary
lubrication
noun
/ˌluːbrɪˈkeɪʃn/
UK
/ˌluːbrɪˈkeɪʃn/
US
1
the act or process of putting a lubricant on something such as the parts of a machine, to help them move smoothly
روانکاری, روغنکاری, روانسازی