Obere ụwa ọla bụ ihe dị mkpa akụrụngwa maka imepụta hydrogen nchekwa ihe, NdFeB na-adịgide adịgide magnet ihe, magnetostrictive ihe, wdg Ha na-ọtụtụ-eji na-abụghị ferrous ọla na ígwè ọrụ. Mana ọrụ igwe ya siri ike nke ukwuu, ọ na-esikwa ike iwepụta m...
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