two-way radio

two-seat / two seat

duplex / two-way channel

two-way alternate communication

two-way communication

two-way audiolink

one-way UAV / one-way attack UAV (OWA UAV)

one-way-radio

stabilized in two axes

two brigades abreast

two-cycle engine

two-handed riot baton

two-man foxhole

two-prong attack

two-sided exercise

two-stage missile / rocket / vehicle

two-stage solid-propellant ballistic vehicle

two-up formation

two-lane all-weather road

bi-strategic command (Bi-SC) (of the two Strategic Commands )

two-crewmember cockpit

two-man fire trench

four by two

two-aircrew aircraft

two-aisle compartment

two-baffle muzzle brake

one-(two-, three) dimensional steady flow

two-decked plane

two-dimensional flow

two-dimensional element

two-frequency glide path system

two-frequency localizer system

two-pilot crew