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  _____     ______   _____      _____    ______   
 |__  //   /_   _// |  __ \\   |  ___|| |      \\ 
   / //     -| ||-  | |  \ ||  | ||__   |  --  // 
  / //__    _| ||_  | |__/ ||  | ||__   |  --  \\ 
 /_____||  /_____// |_____//   |_____|| |______// 
 `-----`   `-----`   -----`    `-----`  `------`

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發送短信 : Experimental evidences of topological surface states of β-Ag2Te