engine breathing ability

grade-ascending ability / grade ascending ability

air-breathing jet engine

air breathing engine

compressorless air-breathing jet engine

ram air-breathing jet engine

engine capacity / engine power, engine output

breathing control

scuba (Self-Contained Underwater Breathing Apparatus)

self-contained breathing apparatus (SCBA)

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

breathing system

oxygen-breathing apparatus

autonomous breathing apparatus

breathing oxygen

breathing-oxygen system

self-contained open-circuit breathing apparatus

air breathing defense

air breathing missile

air breathing target

Emergency Escape Breathing Device (EEBD)

reaction engine / motor (jet engine)

rotary engine (Wankel engine)

engine ground run / engine test

engine oil reservoir / engine oil tank

airbreathing jet engine / ducted jet engine

cross-country ability

fighting ability

Puma RQ-20 (Pointer Upgraded Mission Ability)