Xaiv cov lus qhia carburizing tus neeg sawv cev
Cov txheej txheem tshiab ntawm carburizing tus neeg sawv cev smelting, txawm tias tus nqi lossis kev ua tiav cov khoom tiav, yog qhov zoo dua li cov qauv loj ntawm cov npua hlau ntau npaum li cas, carburizing tus neeg sawv cev ntxiv rau cov hlau smelting rauv, siv cov khoom zoo, tus neeg saib xyuas carburizing zoo, tuaj yeem ua qhov phem tshaj. khib stee...