Họrọ Ọkwa Igwe Ọdụdọ ziri ezi
Mgbe ịmechara njirimara nke ihe kacha dabara adaba maka magnetik ma ọ bụ mgbakọ magnetik gị, nzọụkwụ ọzọ bụ ikpebi ọkwa magnet maka ngwa gị. Maka Neodymium Iron Boron, Samarium Cobalt, na ferrite (seramiiki) ihe, g ...
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