| Acronym | Meaning |
 | MAA | Maximum Authorized Altitude |
| NMR | Nuclear Magnetic Resonance |
| D/L | Downlink |
| W/W | Wheel Well |
| B/V | Bleed Valve |
| STS | Space Transportation System |
| DCS | Data Control System |
| PRC | People'sRepublic Of China Satellite |
| CB/AC | Circuit Breaker (ac Only) |
| ANSI | American National Standard Institute |
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