Dab tsi yog cov khoom siv los tiv thaiv zoo li qub
Muaj ntau yam khoom siv los tiv thaiv kev tiv thaiv, suav nrog ion kiv cua, ion cua drums, ion cua nozzles, ion tuav thiab cov khoom siv fais fab. Haoyatong cov khoom siv los tiv thaiv kev zoo li qub kuj suav nrog cov khoom siv tiv thaiv kev tiv thaiv zoo li qub thiab cov khoom qub.