| Acronym | Meaning |
 | ESCA | Electron Spectroscopy For Chemical Analysis |
| GSA | General Services Administration |
| EEE | Electronic |
| EDS | Emergency Detection System |
| SFD | Crossfeed |
| DCOP | Detailed Checkout Procedures |
| DEG | Degree |
| E/M | Engineering Model |
| RMRS | Repeatable Maintenance And Recall System |
| OMS | Orbital Maneuvering System |
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