Rau cov khoom me me ntawm cov khoom ua haujlwm, cov khoom siv hmoov txheej txheej feem ntau yog siv, thaum rau cov khoom loj, ob qho tib si phau ntawv thiab cov khoom siv hmoov txheej tsis siv neeg feem ntau yog ua haujlwm. Txawm hais tias siv los yog siv cov hmoov txheej tsis siv neeg, kev tswj xyuas kom zoo yog qhov tseem ceeb heev. Nws yog ib qho tseem ceeb kom ntseeg tau tias cov hmoov zoo sib xws thiab cov thickness zoo ib yam ntawm cov coated workpieces, tiv thaiv qhov tsis xws luag xws li cov tshuaj tsuag nyias nyias, tsis pom qhov chaw, thiab rub tawm.
Nyob rau hauv cov txheej txheem ntawm txheej txheej ntau lawm, tshwj xeeb yuav tsum tau them rau cov hooks ntawm lub workpieces. Ua ntej nkag mus rau theem kho, cov hmoov ntau npaum li qhov ua tau raws li cov hooks yuav tsum tau muab tshuab tawm kom tsis txhob muaj hmoov ntau dhau los ntawm kev sib zog. Yog tias tshem tawm cov hmoov nplej ntau dhau ua ntej kho yog qhov nyuaj tiag tiag, cov hmoov ua kom zoo ntawm cov hooks yuav tsum tau muab tshem tawm sai sai kom ntseeg tau tias muaj kev ua tau zoo, ua kom yooj yim rau cov hmoov siv rau cov khoom ua haujlwm tom ntej.
