| air-injection engine(noun, expression, technology, entity, means) |
| air-jet engine(noun, expression, technology, entity, power) |
| air breathing engine system(noun, expression, technology, entity, power) |
| air chamber diesel engine(noun, expression, technology, entity, means) |
| air charged stirling engine(noun, expression, technology, entity, power) |
| air engine(noun, expression, technology, entity, means) |
| air injection engine(noun, expression, technology, entity, means) |
| air turbo-rocket engine(noun, expression, technology, entity, power) |
| air turboramjet engine(noun, expression, technology, entity, power) |
| air turborocket engine(noun, expression, technology, entity, power) |
| airborne rocket engine(noun, expression, technology, development, means) |
| airbreathing engine(noun, expression, technology, entity, means) |
| aircraft-engine crankcase(noun, expression, technology, entity, means) |
| aircraft-engine fleet(noun, expression, technology, entity, means) |
| aircraft engine building(noun, expression, technology, entity, means) |
| aircraft engine emission(noun, expression, technology, development, means) |
| aircraft engine part(noun, expression, technology, entity, power) |
| aircraft engine production(noun, expression, technology, entity, power) |
| aircraft repair ship engine(noun, expression, technology, entity, power) |
| aircraft rocket engine(noun, expression, technology, development, means) |