What does OPR stand for?
OPR stands for "Orbiter Payload Recorder"
How to abbreviate "Orbiter Payload Recorder"?
"Orbiter Payload Recorder" can be abbreviated as OPR
What is the meaning of OPR abbreviation?
The meaning of OPR abbreviation is "Orbiter Payload Recorder"
What does OPR mean?
OPR as abbreviation means "Orbiter Payload Recorder"