Thaum xaiv lub tshuab winding ntsug, ntawm no yog ob peb lub ntsiab lus tseem ceeb: Kev sib xyaw ntau lawm xav tau nrog cov khoom siv: Ua ntej, nws yog ib qho tseem ceeb kom paub meej koj cov kev xav tau ntau lawm, suav nrog cov lus qhia tshwj xeeb winding, hlau txoj kab uas hla ntau, winding ceev, coil hom (xws li ib theem, peb-phase, mul...
Nyeem ntxiv