Displaying 1-2 of 2 result(s).
Program Performance Baseline
in NASA
Parts per Billion p/b preferred
in NASA
129162129163
Similar to PPB
ABT - Approximate Burn Time
ABU - Analog Back- Up
ABU - After Body Unit
ABUP - Auxiliary Back- Up Plate
ABV - Above
ABV - Air Bubble Vehicle
AC - Aerodynamic Center
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