| Acronym | Meaning |
 | PVRO | Pyrotechnics |
| HISAM | Hardware Initiated Standalone Memory |
| MK | Mark |
| SDS | Steering Damping System |
| RST | Recessed Selectromatic Terminal |
| NASA | National Aeronautics And Space Administration |
| GCHX | Ground Cooling Heat Exchanger |
| L&C | Laboratory And Checkout |
| COMP | Computer |
| GRID | Graphic Retrieval And Information Display |
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