концентрація кисню
liquid oxygen plant
oxygen
oxygen kit
oxygen purge system
oxygen corrosion
oxygen flow indicator
oxygen-oil rocket fuel
oxygen recovery
oxygen supply
oxygen-breathing apparatus
passenger oxygen system
breathing oxygen
breathing-oxygen system
dissolved oxygen
oxygen equipment
portable oxygen system
quick-donning oxygen mask
liquid oxygen
oxygen mask
concentration along the key axes
concentration of forces and facilities
concentration of troops
killing concentration
lethal concentration
main concentration (of troops)
troop concentration
consistent fire concentration
double consistent fire concentration
triple consistent fire concentration
successive barrage / successive concentration
artillery concentration
concentration period