What does ECIS stand for?
ECIS stands for "Earth-Centered Inertial System"
How to abbreviate "Earth-Centered Inertial System"?
"Earth-Centered Inertial System" can be abbreviated as ECIS
What is the meaning of ECIS abbreviation?
The meaning of ECIS abbreviation is "Earth-Centered Inertial System"
What does ECIS mean?
ECIS as abbreviation means "Earth-Centered Inertial System"
