Mai katsewa na'ura ce da ke amfani da vacuum don katse da'irar lantarki.Ana amfani da injin don ƙirƙirar baka mai ƙarfin ƙarfin lantarki tsakanin lambobin sadarwa, wanda injin yana kashe shi.Ana amfani da irin wannan nau'in na'urar a aikace-aikace masu ƙarfi, kamar tsarin rarraba wutar lantarki, whe...
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