effectiveness;
эк. efficiency;
~ капиталовложений efficiency of investments;
коммерческая ~ commercial effectiveness;
~ производства efficiency of production, production efficiency;
повышение ~ости increase in/of efficiency;
~ый effective, effectual;
эк. efficient;
~ая мощность effective power;
~ые меры effectual measures
effectiveness, efficacy, efficaciousness
повышать эффективность производства — to increase the efficiency of production