Nws txuas cov phaj liner thiab tsim lub twj tso kua mis chamber ua haujlwm nrog impeller, raws li ib qho ntawm cov khoom ntub dej rau cov twj slurry, Nws hnav-tiv taus yog qhov tseem ceeb heev rau kev ua haujlwm-lub neej.
