двовісний (автомобіль) з однією провідною віссю
four-cycle / four-stroke
four by four
fingertip formation / finger-four formation / four finger formation
two-seat / two seat
four-point barb
four-charge gun
four-barreled anti-aircraft gun
four-groove barrel
four-point
four-stage compressor
four-way valve
four-wheel drive
four-wheel drive truck
four-boss breaker cam
four-stroke cycle
four-step stand
four-stroke engine
Four Tonner (Bedford truck)
duplex / two-way channel
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-way radio
two-lane all-weather road
bi-strategic command (Bi-SC) (of the two Strategic Commands )