| Acronym | Meaning |
 | LEB | Lower Equipment Bay |
| SEOS | Synchronous Earth Observation Satellite |
| NARS | National Archives And Record Services |
| VAR | Volt Ampere Reactive |
| DELTA-T | Difference In Temperature |
| PAPI | Precision Approach Path Indicator |
| NCIU | Network Common Interface Unit |
| U/D | Update |
| MCIU | Manipulator Controller Interface Unit |
| HDW | Hardware |
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