Qhov system

Cov khoom lag luam yog ua tiav cov txheej txheem nrog ntau hom kev ua haujlwm uas tuaj yeem siv ncaj qha. Nws cov ntawv thov hauv kev lag luam poob mus rau plaub yam tseem ceeb, xws li: kev txheeb xyuas, nrhiav pom, ntsuas, kev tso npe thiab kev taw qhia. Muab piv rau tib neeg qhov muag pom, kev saib xyuas lub tshuab muaj qhov zoo sib xws ntawm kev ua haujlwm siab, tus nqi qis thiab muaj peev xwm tsim cov ntaub ntawv kom muaj nuj nqis thiab cov ntaub ntawv dav.