Munguva yekugadzirwa kwemazuva ese, nekuda kwekuchembera kwechoto chinopisa, nitrogen jenareta, kuora kweammonia nemimwe michina, zvigadzirwa zvehupfu simbi mushure mechoto zvine matambudziko eoxidation akadai sekusviba, kutsvuka, decarburization, uye sandblasting pa t. ..
Verenga zvimwe