Cov yam ntxwv thev naus laus zis ntawm kev txiav yog nyob ntawm tus qauv ntawm cov cuab yeej txiav thiab cov ntaub ntawv txheeb ze ntawm cov cuab yeej txiav thiab cov khoom ua haujlwm. Yog li ntawd, raws li tus txheej txheem cov yam ntxwv, kev txiav ua feem ntau tuaj yeem muab faib ua: tig, drilling, tho txawv, milling, npaj, broaching thiab sawing nrog cov cuab yeej nrog cov hniav zoo thiab tus lej; Cov txheej txheem ntawm kev txiav nrog cov cuab yeej abrasive lossis abrasives nrog cov duab sib txawv thiab cov npoo muaj xws li sib tsoo, sib tsoo, honing thiab polishing.
