1. Saib cov duab.
Ua ntej, saib cov tsos ntawm cov khoom rau geometry, deformation, thiab distortion, thiab xyuas seb cov xim zoo li cas. Feem ntau, cov khoom lag luam zoo tau pom meej meej nrog lub logo, specification thiab hnub tsim khoom. Thaum koj yuav, koj yuav tsum xyuas seb puas muaj daim ntawv pov thawj ntawm kev ua raws cai thiab daim ntawv tso cai huv, thiab lwm yam. Yog tsis muaj daim ntawv tso cai huv, nws yuav siv tsis tau raws li cov kav dej haus.
2. tsw.
Ntsim cov khoom. Yog tias muaj qhov tsis hnov tsw muaj zog, nws yuav yog cov khoom lag luam tsis zoo ua los ntawm cov chaw tsim khoom kom muaj txiaj ntsig. Hom yeeb nkab dej no feem ntau yog tshuaj lom thiab tuaj yeem ua rau tib neeg noj qab haus huv, yog li yuav ua tib zoo. Ib lub hose zoo tsis muaj ntxhiab tsw tshwj xeeb thiab xav tias du thiab du rau qhov kov.
3. Cov kav xa dej yuav khoom.
Thaum yuav cov khoom, koj yuav tsum xaiv cov tub lag luam tsis tu ncua lossis cov khoom siv hauv tsev loj, kom qhov zoo yuav raug lees paub thiab kev pabcuam tom qab muag yuav zoo dua. Tsis tas li ntawd, thaum yuav cov khoom qub, koj tuaj yeem sib piv cov tuam txhab sib txawv thiab xaiv cov khoom zoo thiab tus nqi qis. Tsis tas li ntawd, qhov kev pab cuam tom qab muag tau muab los ntawm cov lag luam loj loj kuj tseem zoo heev, uas tuaj yeem zam qee qhov teeb meem tsis tsim nyog.