Cov saw hlau yog qhov khoom siv ua haujlwm tshwj xeeb, tshwj xeeb yog qib 80 Lifting Chains. Ntau lub tebchaws loj hlob tau tig mus rau cov tebchaws tsim kev tsim khoom, yog li kev txhim kho kev cia siab ntawm 80-theem saw hlau tau zoo.
Saw kev tsim khoom muaj peev xwm yog qhov txiav txim siab tau rau kev tsim cov saw hlau, thiab theem pib lub zog ntawm cov saw khoom yog qhov degree ntawm cov txheej txheem ntawm cov khoom tsim saw. Lub zog ntawm cov cuab yeej siv cov txheej txheem ncaj qha cuam tshuam los ntawm kev siv zog ntawm cov tuam txhab tsim khoom lag luam thiab kev lag luam muaj txiaj ntsig zoo ntawm kev ua tau zoo. Nyob rau hauv xyoo tas los, Tuam Tshoj txoj saw kev lag luam tau them sai sai rau kev nqis peev ntawm kho vajtse thiab khoom siv. Ntau cov tuam txhab saw hlau tau nqis peev ntau thiab peev txheej thiab khoom siv dag zog. Kev tsim thiab siv cov cuab yeej siv rau kev tsim cov saw tau muab tso rau hauv kev siv. Nws cov neeg siv khoom siv ua haujlwm tau zoo yog qhov siab, cov txheej txheem tsim nyog dua, thiab nws cov haujlwm yog ntau dua thiab ua tiav. Qhov no tau ua rau muaj kev txhim kho tseem ceeb nyob rau hauv lub zog ntawm Tuam Tshoj txoj kev tsim kho me me thiab nruab nrab hauv kev ua haujlwm.
Yog li ntawd, nws tuaj yeem hais tau nrog txoj kev paub tseeb tias tsib xyoos tom ntej no yuav yog qhov kev lag luam nyob ntev hauv Suav teb.
