UU means Micromicron
name micron obsolete; use um
micrometer in
NASA
Similar to UU
ABCL - As Built Configuration List
ABE - Anomalous Biological Entities
ABHRS - As Built Hardware Reporting System
ABL - Allocated BaseLine
ABOLT - Acquire Bolt
ABS - Anti Burn Shield
ABS - After Body Section
View all in NASA