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  ______    ______    _____     _____    _    _   
 /_   _//  /_   _//  / ____||  |  ___|| | |  | || 
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   `-`'    `-----`    `----`   `-----`  `-`   `-`

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發送短信 : Electrical properties of Er<inf>2</inf>O<inf>3</inf>-Doped potassium sodium niobate based silicate glass