What does HDU stand for?
HDU stands for "Hose and Drogue Unit"
How to abbreviate "Hose and Drogue Unit"?
"Hose and Drogue Unit" can be abbreviated as HDU
What is the meaning of HDU abbreviation?
The meaning of HDU abbreviation is "Hose and Drogue Unit"
What does HDU mean?
HDU as abbreviation means "Hose and Drogue Unit"