UU means Micromicron
name micron obsolete; use um
micrometer in
NASA
Similar to UU
AAV - Aerospace Audio- Visual
ABA - Astronaut Boarding Aircraft
ABC - Active Body Control
ABC - Audio Bus Coupler
ABCL - As Built Configuration List
ABE - Anomalous Biological Entities
ABHRS - As Built Hardware Reporting System
View all in NASA