Txwv tus nqi ntawm qhov sib sib zog nqus groove pob bearing kev co
Tus nqi ntawm cov kabmob vibration (ceev) yog ib qho kev ntsuas rau kev ntsuam xyuas ntawm cov kabmob los ntawm kev tau txais cov nqi ntsuas hauv ntau zaus ntawm cov kabmob xws li enthe siab, nruab nrab thiab lowfrequencies. Inaccordance nrog lub teb chaws tus qauv, nws muab faib ua 5 theem xws li V, V1, V2, V3, V4.