(2) Kev sib hloov ceev
① Qhov siab tshaj plaws ceev uas lub twj tso kua mis hydraulic tuaj yeem ua haujlwm ib txwm siv sijhawm ntev hauv kev ntsuas siab yog hu ua qhov ntsuas nrawm nn.
② Qhov siab tshaj plaws ceev nmax yog qhov ceev uas lub twj tso kua mis hydraulic tuaj yeem ua haujlwm luv luv tshaj nws qhov ntsuas ceev ntawm qhov ntsuas siab.
③ Qhov tsawg kawg nkaus ceev tso cai rau kev ua haujlwm ib txwm, nmin, hu ua qhov tsawg kawg nkaus ceev ntawm lub twj tso kua mis hydraulic. Qhov feem ntau siv raws li txoj cai ntawm kev ntsuas rau kev sib hloov ceev (nyob ceev, siab tshaj plaws ceev, yam tsawg kawg nkaus ceev, thiab lwm yam) yog r/min (revolutions per feeb). Qee lub sij hawm lub angular tshaj tawm w kuj tseem siv los sawv cev rau lub twj tso kua mis, nrog rau chav tsev ntawm w yog rad/s (radians ib ob) [1 r/min=(π/30) rad/s].
