Enwere ụzọ abụọ iji kwụọ ụgbọ ala eletrik, chaja AC na chaja DC, nke abụọ nwere nnukwu oghere na paramita teknụzụ dị ka voltaji ugbu a na voltaji.Nke mbụ nwere arụmọrụ nchaji dị ala, ebe nke ikpeazụ nwere arụmọrụ nchaji dị elu.Liu Yongdong, onye osote onye isi otu Join…
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