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Umbhobho wokuvuthela igesi

Ngokuvuthela i-nitrogen okanye i-argon gas, i-workpiece ithintelwe kwi-oxidizing kunye ne-blackening kwaye i-angle yombhobho ovuthelayo inokulungiswa ngokuthanda.

dgd (8)

 


Ixesha lokuposa: Sep-20-2019