overcome friction造句怎麼寫

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

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

"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%."