(основна) гармата (танка)
main defense area (line) / main defensive position
main tank/ main fuel tank
main gear box / main rotor transmission
main rotor transmission / main gear box
main-rotor head / main-rotor hub
main-rotor hub / main-rotor head
main gun (cannon) number
L119 light gun (105 mm light gun)
submachine gun / sub-machine gun (SMG; smg)
gun control equipment / gun-control equipment (GCE)
duck gun (duck-gun)
flame gun / flaming gun
gun by gun
direction of the main blow
form the main effort
main (fighting) force(s)
Main Air Traffic Flow Management Centre (MATFMC)
Main Armaments Directorate of the RF Armed Forces
main attack
main ballast tank
main base
main battery
main battle area (MBA)
main battle force
main battle tank (MBT)
main blow
main body
main charge
main command post
main concentration (of troops)
main control room
main convoy