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   _____    ______   __   _     ______    ______  
  / ___//  /_   _// | || | ||  /_   _//  /_   _// 
  \___ \\   -| ||-  | '--' ||   -| ||-     | ||   
  /    //   _| ||_  | .--. ||   _| ||_    _| ||   
 /____//   /_____// |_|| |_||  /_____//  /__//    
`-----`    `-----`  `-`  `-`   `-----`   `--`

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發送短信 : Stability of time-varying switched systems with time-varying delay