Qhov zoo:
1. yooj yim thiab ceev pib thiab kaw, kev txuag hluav taws xob, tsis muaj dej tsis kam, tuaj yeem ua haujlwm ntau zaus
2. Cov qauv yooj yim, me me, luv qauv ntev, me me ntim, lub teeb yuag
3. pib thiab kaw torque yog me me, vim hais tias lub phaj npauj npaim ntawm ob sab ntawm lub ncej yog qhov sib npaug ntawm qhov nruab nrab, thiab cov kev taw qhia ntawm lub torque generated yog qhov sib txawv, yog li nws yog ib qho kev txuag zog.
4. Cov khoom siv ntawm sealing nto feem ntau yog siv cov roj hmab, yas, yog li qhov tsis tshua muaj siab sealing kev ua tau zoo.
5. Kev ua haujlwm yooj yim, phau ntawv, hluav taws xob, pneumatic, hydraulic hom tuaj yeem xaiv.
