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           __   __    _  _     _____    __   __  
  ____     \ \\/ //  | \| ||  |  ___||  \ \\/ // 
 |    \\    \ ` //   |  ' ||  | ||__     \   //  
 | [] ||     | ||    | .  ||  | ||__     / . \\  
 |  __//     |_||    |_|\_||  |_____||  /_//\_\\ 
 |_|`-`      `-`'    `-` -`   `-----`   `-`  --` 
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發送短信 : The transient response of a two-layered elastic cylindrical shell impinged by an underwater shock wave