English translation for "backing gas"

保护焊缝背面用气体

Similar Words：

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