Cov qauv hlau yog siv dav hauv kev tsim kho thiab kev tsim khoom. Txhawm rau kom tau raws qhov xav tau ntau lawm, nws yog qhov tsim nyog los txiav rau hauv cov txheej txheem tsim, kom thiaj li muaj cov sib txawv cov khoom siv kom tau raws li qhov xav tau ntawm kev teeb tsa. Txhawm rau kom ntseeg tau tias qhov zoo ntawm kev txiav, muaj qee cov teeb meem uas yuav tsum tau them sai sai rau thaum cov hlau qauv txiav, yog li cov teeb meem uas yuav tsum tau them sai sai rau thaum nws txiav? Nov yog cov lus qhia ntxaws ntxaws:
1. Thaum muaj ntau ntu raug teem rau ntawm lub phaj steel thiab muaj ob peb txoj kev txiav txuas, cov txheej txheem txiav tsim nyog yuav tsum tau npaj ua ntej ua ntej txiav.
2. Lub khoov tsis zoo ntawm cov khoom tom qab txiav yuav tsum tau kho, thiab qhov chaw txiav nrog ntxhib lossis burr yuav tsum tau polished.
3. Thaum lub sijhawm txiav cov txheej txheem, cov hlau nyob ze ntawm qhov kev nqis siab yuav muab zawm thiab khoov vim qhov txiav quab yuam. Lub interface txoj haujlwm ntawm cov ntu ntu tseem ceeb thiab cov hlau txuas yuav tsum raug muab pov tseg, npaj ua haujlwm lossis hauv av nrog lub log sib tsoo.
Raws li hom khoom siv hauv tsev, yog li steel qauv hauv cov txheej txheem txiav yuav tsum them sai sai los xav txog ntau yam ntawm qhov teeb meem, hauv nruj me ntsis raws li cov kev cai ua, thiaj li muaj cov nyhuv txiab zoo dua, kev ua cov khoom zoo dua, tuaj yeem ua tag nrho lub tsev muaj cov nyhuv zoo dua.
