What does OOS stand for?
OOS stands for "Orbitto-Orbit Stage"
How to abbreviate "Orbitto-Orbit Stage"?
"Orbitto-Orbit Stage" can be abbreviated as OOS
What is the meaning of OOS abbreviation?
The meaning of OOS abbreviation is "Orbitto-Orbit Stage"
What does OOS mean?
OOS as abbreviation means "Orbitto-Orbit Stage"
