1. Trams thiab charging pawg yog ob qho tib si "electromagnetic radiation" Thaum twg cov hluav taws xob tau hais, txhua tus neeg yuav xav txog lub xov tooj ntawm tes, khoos phis tawj, microwave ncu, thiab lwm yam, thiab sib npaug rau lawv w ...
Nyeem ntxiv