Cov twj siv hluav taws xob yog cov cuab yeej siv hluav taws xob tseem ceeb siv los hloov lub zog hluav taws xob rau hauv lub zog hydraulic, muab ntau yam kev siv thoob plaws ntau yam kev lag luam.Kab lus no tshawb txog lub tswv yim ntawm lub zog twj tso kua mis, lawv cov qauv kev ua haujlwm, thiab ntau hom kev siv uas lawv ua si qhov tseem ceeb ...
Nyeem ntxiv