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Engine Combustion
in NASA
Engineering Change Order
in NASA
Earth Communications Office
in NASA
Earth Crossing Objects
in NASA
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Similar to ECO
A/C - Air Conditioning
A/D - Analog-to-Digital
A/E - Architectural and Engineering
A/E - Activity Elements
A/F - Air-to-Fuel Ratio
A/FM - Air/Firing Mechanism
A/G - Air to Ground
View all in NASA