Cov lus nug ntawm seb puas tsim nyog sib piv tau nyob rau hauv ib tus tsav saw hlau yog ib ntsiab lus kawg. Cov saw hlau thiab cov khub sib piv yog ob txoj kev sib txawv sib txawv, txhua tus nrog nws tus kheej zoo thiab qhov tsis zoo. Cov khub sib piv yog feem ntau siv nyob rau hauv high- ceev, thiab precances kis daim ntawv thov, muab cov txiaj ntsig zoo xws li cov txiaj ntsig kev sib kis zoo thiab qhov siab precision. Cov saw hlau tsav, ntawm qhov kev tsim nyog rau qhov qis- ceev} Kev ntxhibing cov qauv, featuring cov qauv yooj yim thiab tus nqi qis.
Yog li, nyob rau qee kis, tsav saw hlau tuaj yeem hloov cov khub sib zog, tab sis kev xaiv yog nyob ntawm cov kev xav tau. Yog hais tias siab {{- precision tig kev sib kis yog qhov yuav tsum tau, ib qho kev xaiv sib piv yog qhov kev xaiv sib txawv. Yog hais tias siab - torque, qis}}} ceev fais fab kis tau, ib txoj saw hlau ceev yog qhov kev xaiv zoo.
