Raws li lawv txoj kev ua haujlwm, cov thoob excavator tau muab faib ua cov thoob backhoe thiab lub ntsej muag shovel thoob; backhoe thoob yog hom siv ntau tshaj plaws.
Raws li lawv cov txheej txheem kev ua haujlwm sib txawv, lawv tau muab faib ua lub ntsej muag shovels, backhoes, grapples, thiab draglines.
Raws li qhov sib txawv ntawm cov khoom siv thiab cov yam ntxwv ntawm kev ua tau zoo, lawv tau muab faib ua tus qauv - lub thoob dej, hnyav - lub thoob dej, thiab cov mining - lub thoob dej num.
Raws li lawv cov kev ua haujlwm tshwj xeeb thiab kev siv ua haujlwm, lawv tau muab faib ua cov thoob ntiaj teb, cov thoob pob zeb, cov thoob ripper, trenching thoob, pob txha thoob, grapples, ntxuav thoob, tilting thoob, thiab lwm yam.
Raws li lawv cov khoom siv sib txawv, lawv tau muab faib ua lub ntsej muag shovels, backhoes, grapples, thiab draglines.
