Abstract: nchikota mkpuchi bụ ihe dị mkpa metụtara nchekwa nke ngwaahịa ngwa eletriki, a na-akwụkwa ya anya mgbe niile site na akụkụ niile.A na-eji nhazi ihe mkpuchi mkpuchi na nke mbụ na ngwaahịa eletrik dị elu.Na China, ihe mberede nke sistemu mkpuchi mkpuchi kpatara...
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