What does SPPM stand for?
SPPM stands for "Short Period Polar Motion"
How to abbreviate "Short Period Polar Motion"?
"Short Period Polar Motion" can be abbreviated as SPPM
What is the meaning of SPPM abbreviation?
The meaning of SPPM abbreviation is "Short Period Polar Motion"
What does SPPM mean?
SPPM as abbreviation means "Short Period Polar Motion"
