单一银行制

international system of units【计量】;international unit system【计量】

anhydroglucose unit

unit capacity of purifier【粮食】

feed roller film inking unit

British thermal unit(BTU,Btu)

vitreous cutter, vitrectomy unit

bounded existential quantifier【数】;unit quantifier【数】

rocket engine (rocket drive, rocket propulsion unit)