Cov teeb meem thiab cov kev daws teeb meem rau cov cuab yeej kho mob ua ntej: Cov kauj ruam tseem ceeb los xyuas kom meej txheej zoo
Cov khoom siv kho mob ua ntej ua lub luag haujlwm tseem ceeb hauv kev lag luam txheej, lawv yog lub luag haujlwm rau kev kho qhov chaw ntawm lub workpiece thiab npaj nws rau cov txheej txheem tom ntej. Txawm li cas los xij, cov teeb meem ntawm ...
saib kom meej