PEM

Definitions

1. Initialism of polymer electrolyte membrane.
   abbreviation, alt-of, countable, initialism, uncountable
2. Initialism of proton exchange membrane.
   abbreviation, alt-of, countable, initialism, uncountable
3. Acronym of power electronics module.
   abbreviation, acronym, alt-of, countable, uncountable
4. Initialism of post-exertional malaise.
   abbreviation, alt-of, countable, initialism, uncountable

Equivalents

CEFR level