Việt
lớp bảo vệ
Anh
protective sheathing
protective casing
protective covering
Đức
Schutzhülle
Pháp
enveloppe protectrice
protective casing,protective covering,protective sheathing /TECH/
[DE] Schutzhülle
[EN] protective casing; protective covering; protective sheathing
[FR] enveloppe protectrice