Perm (unit)
Unit of permeance
A perm is a unit of permeance or "water vapor transmission" given a certain differential in partial pressures on either side of a material or membrane.
Nº Q7169176 ★
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Perm (unit)
Unit of permeance
A perm is a unit of permeance or "water vapor transmission" given a certain differential in partial pressures on either side of a material or membrane.
Na Wikipédia
Texto em inglês Ainda não há artigo no seu idioma: trecho em inglês.
A perm is a unit of permeance or "water vapor transmission" given a certain differential in partial pressures on either side of a material or membrane.
Texto: Wikipédia em inglês, CC BY-SA 4.0. ·
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