1, RF xeem xov tooj cua zaus yog dab tsi, feem ntau abbreviated li RF.Xov tooj cua zaus kuaj yog xov tooj cua zaus tam sim no, uas yog ib tug luv luv rau high-frequency alternating tam sim no electromagnetic tsis.Nws sawv cev rau cov zaus electromagnetic uas tuaj yeem tawg mus rau hauv qhov chaw, nrog ntau zaus ...
Nyeem ntxiv