Kev ua hauj lwm cov qauv
- Electromagnetic Ua Haujlwm: Cov neeg tooj no ua haujlwm ntawm lub hauv paus ntsiab lus ntawm cov tshuab hluav taws xob. Thaum energized, lub zog hluav taws xob yog tsim tawm, ua rau cov ntaub thaiv nres los koom nrog lub discict disc, yog txwv tsis pub sib txhuam.
- Lus teb ceev: Vim yog kev ua nrawm nrawm ntawm lub zog hluav taws xob, cov brakes no tuaj yeem muab kev txwv ceev, ua rau lawv zoo tshaj plaws rau cov ntawv thov tswj.
