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Program Performance Baseline
in NASA
Parts per Billion p/b preferred
in NASA
129162129163
Similar to PPB
A/C - Associate Contractor
A/C - Air Conditioning
A/D - Analog-to-Digital
A/E - Architectural and Engineering
A/E - Activity Elements
A/F - Air-to-Fuel Ratio
A/FM - Air/Firing Mechanism
View all in NASA