вихідна обстановка
create an opening
high altitude-high opening (HAHO)
high altitude-low opening (HALO)
high-altitude low-opening parachute technique (HALO)
firing signals (opening, shifting, ceasing fire)
air intake opening
air inlet opening
belt opening
breech-opening mechanism
breech-opening motor
clear opening
cylinder block inlet opening
feed opening
magazine feed-piece opening
front-sight opening
limit of opening fire
frame around opening
valve opening lead
muzzle opening
quick-opening cluster
opening portlight
opening charge
opening elevation
opening line of barrage
opening narrative
opening of hostilities
opening range
opening stage of war
opening
air situation
air situation data
air situation data exchange (ASDE)