Cov txheej txheem yooj yim ntawm kev forging muaj xws li chim siab, elongation, xuas nrig ntaus, khoov, twisting, tshem tawm, txiav, thiab forging. Dawb forging elongation Elongation, tseem hu ua kev txuas ntxiv, yog txheej txheem forging uas txo qhov ntu ntu ntawm daim ntawv hlais thiab ua kom nws ntev. Ntev...
Nyeem ntxiv