transcription, транскрипция: [ ɪfɪʃ(ə)nsi ]
( efficiencies)
1.
Efficiency is the quality of being able to do a task successfully, without wasting time or energy.
There are many ways to increase agricultural efficiency in the poorer areas of the world.
...energy efficiency.
N-UNCOUNT
2.
In physics and engineering, efficiency is the ratio between the amount of energy a machine needs to make it work, and the amount it produces. ( TECHNICAL )
N-UNCOUNT : also N in pl