permeability
/ˌpɜːmɪəˈbɪlətɪ/noun
mass noun
1
- the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it渗透; 渗透性。
2
- Physics a quantity measuring the influence of a substance on the magnetic flux in the region it occupies【物理】磁导率。