чотириступінчастий нагнітач
four-cycle / four-stroke
four by four
fingertip formation / finger-four formation / four finger formation
compressor stage
subsonic compressor stage
supersonic compressor stage
transonic compressor stage
four-point barb
four-charge gun
four by two
four-barreled anti-aircraft gun
four-groove barrel
four-point
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)
main stage
multiple-stage missile
single-stage
single-stage missile / rocket
stage
stator vane stage
two-stage missile / rocket / vehicle
two-stage solid-propellant ballistic vehicle
first stage fuel filter
off-design stage performance
single-stage turbine