кисневодихальна система
oxygen-breathing apparatus
breathing oxygen
oxygen purge system
passenger oxygen system
portable oxygen system
breathing system
liquid oxygen plant
oxygen
oxygen kit
oxygen corrosion
oxygen flow indicator
oxygen-oil rocket fuel
oxygen concentration
oxygen recovery
oxygen supply
dissolved oxygen
oxygen equipment
quick-donning oxygen mask
liquid oxygen
oxygen mask
air-breathing jet engine
breathing control
scuba (Self-Contained Underwater Breathing Apparatus)
self-contained breathing apparatus (SCBA)
engine breathing ability
hose breathing apparatus
hose breathing device
CABCDE (Critical Bleeding, Airway, Breathing, Circulation, Disability, Exposure)
terrain-hugging air-breathing low-flying vehicles
fresh-air hose breathing apparatus
air breathing engine
compressorless air-breathing jet engine