What does IRB stand for?
IRB stands for "Improved Rotor Blade"
How to abbreviate "Improved Rotor Blade"?
"Improved Rotor Blade" can be abbreviated as IRB
What is the meaning of IRB abbreviation?
The meaning of IRB abbreviation is "Improved Rotor Blade"
What does IRB mean?
IRB as abbreviation means "Improved Rotor Blade"
