оборонна сфера
military sphere
sonar sphere
celestial sphere
corrosive atmo-sphere
isothermal gas sphere
turbulence sphere
sphere
perimeter defense (all-around defense)
beach defense mine / beach-defense mine
active layered theatre (ballistic) missile defense (ALTBMD)
aerospace defense command
air defense (AD)
Air defense and Airspace Management Directorate (NATO)
air defense area
air defense artillery (ADA)
air defense artillery battalion
air defense artillery system
air defense brigade
air defense command
air defense commander (ADC)
air defense control center
air defense early warning
air defense emergency
air defense fire unit
air defense forces
air defense ground environment
air defense guided missile system (AD GM sys)
air defense materiel
air defense missile
air defense missile regiment
air defense operation
air defense plan