Idan akwai oxides ko datti a saman workpiece da lantarki na matsakaicin mita tabo waldi inji, zai shafi kai tsaye lamba juriya. Har ila yau, juriya na tuntuɓar na'urar yana shafar matsa lamba na lantarki, walda na yanzu, yawa na yanzu, lokacin walda, siffar lantarki, ...
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