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  _____    __   __   _____     _    _             
 |__  //   \ \\/ // |  __ \\  | || | ||   ____    
   / //     \ ` //  | |  \ || | || | ||  |    \\  
  / //__     | ||   | |__/ || | \\_/ ||  | [] ||  
 /_____||    |_||   |_____//   \____//   |  __//  
 `-----`     `-`'    -----`     `---`    |_|`-`   
                                         `-`

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發送短信 : Adaptive boundary control of a nonlinear flexible string system