Dab tsi ntawm cov pwm?
Aug 29, 2024
Raws li cov khoom ua haujlwm thiab ua cov thev naus laus zis, nws tuaj yeem faib ua:
Tuag tuag rau kev ua hlau.
Cov txheej txheem tsis yog xim hlau thiab hmoov metallurgy pwm. Xws li cov pwm yas yas (xws li ob-xim pwm, compression pwm thiab extrusion pwm, thiab lwm yam) thiab cov roj hmab pwm thiab cov roj hmab pwm thiab cov roj hmab me me me pwm. Raws li cov yam ntxwv sib luag, kev tuag tuaj yeem muab faib ua cov tiaj tiaj tus tuag thiab cov kab noj hniav tuag nrog qhov chaw. Pwm yog feem ntau ib leeg-thooj thiab tsim hauv cov khoom me me.