-Thaum dabtsi yog khoov: thov kev quab yuam sab nraud rau cov khoom siv cov yeeb nkab los ntawm cov khoom kub thiab txias los khoov nws. Qhov zoo yog ib puag ncig ua phooj ywg, kev ua kom pom kev zoo siab, yooj yim thiab cov txheej txheem ua tau zoo, haum rau cov me me thiab nruab nrab-qhov me me batch ntau lawm.
-Thaum dabtsi yog khoov: Siv cov yam ntxwv ntawm cov kav dej kub uas yuav tsum tau kho cov kav dej kub thiab txhais cov duab ntawm cov yeeb nkab bent.
-Hevrraulic dabtsi yog: los ntawm kev tswjhwm cov yeeb nkab cov txheej txheem los ntawm kev ua haujlwm hydraulic tuaj yeem ua tiav, nrog cov yam ntxwv ntawm kev ua haujlwm yooj yim thiab ua haujlwm zoo.
-Txoj kev khoov dabtsi yog: siv cov chais lossis cov nruas lossis cov nruas kom raug siv rau khoov cov yeeb nkab mus rau qhov xav tau. Tus txheej txheem no yooj yim rau kev ua haujlwm, muaj txiaj ntsig, thiab muaj tus nqi tsim khoom lag luam
