Umnyama yindlela eqhelekileyo yonyango lobushushu besinyithi.Umgaqo-siseko kukwenza ifilimu ye-oxide kwindawo yesinyithi ukuhlukanisa umoya kunye nokufezekisa ukuthintela ukugqwala.I-Blackening yindlela eqhelekileyo yonyango lobushushu besinyithi.Umgaqo-siseko kukwenza ifilimu ye-oxide kwindawo yesinyithi ukuhlukanisa umoya kunye nokufezekisa ukuthintela ukugqwala