Chinese translation for "backing gas"

保护焊缝背面用气体

Similar Words：

"backing film" Chinese translation, "backing fire" Chinese translation, "backing for abrasives" Chinese translation, "backing for treat rubber" Chinese translation, "backing frame" Chinese translation, "backing groove" Chinese translation, "backing groove of weld" Chinese translation, "backing jig" Chinese translation, "backing layer" Chinese translation, "backing light" Chinese translation