Lub tshuab ua yeeb yam zoo sawv cev rau kev ua yeeb yam pneumatic, muab cov peev txheej ua haujlwm ntawm kev ua haujlwm thaum tseem ceeb pneumatic functions tsis muaj. Qhov tseem ceeb no ua rau muaj kev ua haujlwm txuas ntxiv hla ntau yam kev siv.
Cim npe nrov: tawg-pov thawj atex tesnwheel - tooj dag lub cev rau thaj chaw muaj kev phom sij, Tuam Tshoj chaw tsim khoom, chaw tsim khoom, tus nqi, kev muag khoom, hauv Tshuag, qauv dawb
