| Acronym | Meaning |
 | HPOT | High Pressure Oxidizer Turbopump |
| NBS | National Bureau Of Standards |
| INTCHC:IR | Interchanger |
| TAC | Total Average Cost |
| SID | Simulator Interface Devices |
| CMR | Center Materials Representative |
| FA | Fully Automatic |
| PDS | Power Distribution System (Subsystem) |
| EMS | Electromagnetic Susceptibility |
| GAPL | Group Assembly Parts List |
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