Cov khoom
Tsav Hom Hlau Them Tawm Coil
Qhov no them tawm coil yog ib hom kev them nyiaj ntawm coil, qhov ceev ntawm qhov them tawm kauj tuaj yeem synchronized nrog cov duab nrawm ntawm lub tshuab nqus hlau, qhov kom zoo dua yog tias nws tsis ua rau cov hlau sib tsoo thaum lub sijhawm ua haujlwm. Them tawm txheej txheem, ua kom them tawm coil smooth.