overcome friction造句

For the whole enterprise or government, optimism and enthusiasm are like lubricants to overcome friction.

about 20% of the work done by an automobile engine is needed to overcome friction Between moving parts.

"A machine with an efficiency of 0.8 returns 80% of the work input as work output; the remaining 20% is used to overcome friction. In a theoretically frictionless, or ideal, machine, the work input and work output are equal, and the efficiency would be 1, or 100%."