fresh-air hose breathing apparatus

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

fresh-air intake

fresh rations

fresh water

fresh-oil tank

fresh gale

air-breathing jet engine

terrain-hugging air-breathing low-flying vehicles

air breathing engine

compressorless air-breathing jet engine

ram air-breathing jet engine

air breathing defense

air breathing missile

air breathing target

air-brake hose

breathing control

engine breathing ability

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

breathing system

breathing oxygen

breathing-oxygen system

Emergency Escape Breathing Device (EEBD)

portable decontaminating apparatus

acoustic detecting apparatus

boresight apparatus

undercover apparatus