不ふ純じゅん物ぶつ準じゅん位いふじゅんぶつじゅんいMeanings1nounimpurity levelTechnical term in semiconductor physics referring to an energy level introduced by impurities in a crystal.不ふ純じゅん物ぶつ準じゅん位いは半はん導どう体たいの電でん気き的てき特とく性せいに影