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efficiency [ɪ'fɪʃ(ə)nsɪ] abbr.
abbr. effy (Vosoni)
abbr., el. η
abbr., met. e.
abbr., mil. effcy; eff
abbr., mining. effic.
abbr., polym. eff.; effy
efficiency: 14 phrases in 5 subjects
Economy1
Energy industry1
Environment8
Microsoft2
Transport2

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