Friction can be reduced by smoothing and polishing the surface of contact, by lubricating surfaces with grease or oil, or by using roller instead of sliding.
(Friction; can be reduced; by smoothing and polishing the surface of contact, by lubricating surfaces with grease or oil, or by using roller instead of sliding) (Friction; by smoothing; )
Friction Friction
can be reduced by smoothing
by smoothing and polishing the surface of contact, by lubricating surfaces with grease or oil, or by using roller instead of sliding