What does X stand for?
X stands for "Perpendicular to Orbit Plane"
How to abbreviate "Perpendicular to Orbit Plane"?
"Perpendicular to Orbit Plane" can be abbreviated as X
What is the meaning of X abbreviation?
The meaning of X abbreviation is "Perpendicular to Orbit Plane"
What does X mean?
X as abbreviation means "Perpendicular to Orbit Plane"
