(1) operational efficiency ::
skilvirkni(2) operational expenses ::
Rekstrarkostnaður(3) operational costs ::
rekstrarkostnað(4) operational research ::
rekstri rannsóknir(5) operational planning ::
Undirbúningur framkvæmda(6) operational cost ::
Rekstrarkostnaður(7) operational control ::
starfrækslugögn(8) operational readiness ::
Ástand búnaðar(9) operational procedures ::
rekstrarstörfum