Việt
không thấm khí
kín khí
Anh
gas proof
gas tight
Đức
gasfest
gasdicht
Pháp
résistant au gaz
étanche aux gaz
gas proof /SCIENCE,INDUSTRY-CHEM/
[DE] gasfest
[EN] gas proof
[FR] résistant au gaz
gas proof,gas tight /SCIENCE/
[DE] gasdicht
[EN] gas proof; gas tight
[FR] étanche aux gaz
o không thấm khí, kín khí