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

Emergency Escape Breathing Device (EEBD)

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