资料来源 : pyDict

效率,效能,有效

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Efficience \Ef*fi"cience\, Efficiency \Ef*fi"cien*cy\, n. [L.
   efficientia.]
   1. The quality of being efficient or producing an effect or
      effects; efficient power; effectual agency.

            The manner of this divine efficiency being far above
            us.                                   --Hooker.

   2. (Mech.) The ratio of useful work to energy expended.
      --Rankine.

   {Efficiency of a heat engine}, the ratio of the work done an
      engine, to the work due to the heat supplied to it.

资料来源 : WordNet®

efficiency
     n 1: the ratio of the output to the input of any system
     2: skillfulness in avoiding wasted time and effort; "she did
        the work with great efficiency" [ant: {inefficiency}]