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Semiconductors
Any solid material with electrical conductivity due to electron flow (as opposed to ionic conductivity) of a magnitude between that of a conductor and that of an insulator.
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視黃醇
Personal care products; Skin care
視黃醇的維生素 A,另一個名稱在虛結果硬化和皮膚的粗化。視黃醇是脫皮等產品的主要成分-A 和 Renova,這有助於減少皺紋和醫治痤瘡。Colosé ...