hose breathing apparatus

fresh-air hose breathing apparatus

scuba (Self-Contained Underwater Breathing Apparatus)

self-contained breathing apparatus (SCBA)

oxygen-breathing apparatus

autonomous breathing apparatus

self-contained open-circuit breathing apparatus

hose breathing device

air-breathing jet engine

breathing control

engine breathing ability

CABCDE (Critical Bleeding, Airway, Breathing, Circulation, Disability, Exposure)

terrain-hugging air-breathing low-flying vehicles

air breathing engine

breathing system

compressorless air-breathing jet engine

ram air-breathing jet engine

breathing oxygen

breathing-oxygen system

air breathing defense

air breathing missile

air breathing target

portable decontaminating apparatus

acoustic detecting apparatus

boresight apparatus

undercover apparatus

undercover international apparatus

intelligence apparatus

time-interval apparatus

water-recovery apparatus

dew-point apparatus

simplified electronic tracking apparatus

fog-dispersal apparatus