Dab Tsi Binding Hlau Siv Rau?
Mar 31, 2020
Tso lus
Dab tsi yog cov xov khi siv rau?
Cov hlua khi hlau yog siv rau qhov kev siv khi khi ntawm kev tsim kho hauv kev coj ua. Nws yog siv ntau hauv kev tsim kho rau khi khi lub pob rov qab ntawm cov pob qij txha txhawm rau ua kom cov qauv nyob ruaj khov. Cov xov hlau khi tseem hu ua annealed hlau thiab yog ua los ntawm cov hlau tsis zoo
