Cov khoom siv yas rov ua dua tshiab daws cov teeb meem ntawm refractory degradation thiab ib puag ncig muaj kuab paug ntawm cov yas hauv kev xav. Nws tseem yog kev siv pov tseg, uas yog hais txog kev sau cov ntaub ntawv uas yuav muab pov tseg.
Muaj ntau yam thev naus laus zis rau kev rov ua dua cov khoom pov tseg yas, los ntawm cov thev naus laus zis uas tuaj yeem siv ntau yam ntawm cov yas mus rau cov thev naus laus zis uas tshwj xeeb hauv kev rov ua dua ib zaug. Nyob rau hauv xyoo tas los no, cov cuab yeej siv yas rov siv dua tshiab tau ua rau ntau qhov kev vam meej.
