GVDA GD189 EMF Ntes (Electromagnetic Teb) yog siv los ntsuas qhov hluav taws xob ntawm lub tshuab hluav taws xob. Kev piav qhia hluav taws xob hluav taws xob emf yog kev sib xyaw hluav taws xob thiab sib nqus sib xyaw nrog cov khoom siv hluav taws xob pom muaj feem ntau cov khoom siv hluav taws xob thaum cuam tshuam rau hauv qhov hluav taws xob. Ib daim teb sib nqus yog tsim thaum cov khoom siv tau hloov ntawm qhov hluav taws xob. EMF cov tub sim taw yog siv los kuaj cov teeb meem nrog xaim hluav taws xob, cov kab hluav taws xob thiab hluav taws xob thaiv kev ua tau zoo.
