| Acronym | Meaning |
 | ORB | Orbit |
| DA | Deployed Assembly |
| CIDR | Critical Intermediate Design Review |
| PR | Purchase Request |
| B/A | Barometric Altimeter |
| WUCF | Work Unit Code File |
| PRCB | ProgramRequirementsControlBoard |
| NHA | NNHA Next Higher Assembly |
| NASA | National Aeronautics And Space Administration |
| EPDB | Electrical Power Distribution Box |
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