What does PPA stand for?
PPA stands for "porous polycrystal alumina"
How to abbreviate "porous polycrystal alumina"?
"porous polycrystal alumina" can be abbreviated as PPA
What is the meaning of PPA abbreviation?
The meaning of PPA abbreviation is "porous polycrystal alumina"
What does PPA mean?
PPA as abbreviation means "porous polycrystal alumina"