What does it mean?
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OPP
in
NASA
could mean:
Displaying 1-2 of 2 result(s).
OPP
Opportunity
in
NASA
OPP
Opposite
in
NASA
128243
128242
Similar to OPP
A/E
- Activity Elements
A/F
- Air-to-Fuel Ratio
A/FM
- Air/Firing Mechanism
A/G
- Air to Ground
A/L
- AutoLand
A/L
- AirLock
A/L
- Approach and Landing
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