發送短信 : The transient response of a two-layered elastic cylindrical shell impinged by an underwater shock wave

  ____      ______   ______    _    _    ______   
 |  _ \\   /_   _// |      \\ | || | || |      \\ 
 | |_| ||   -| ||-  |  --  // | || | || |  --  // 
 | .  //    _| ||_  |  --  \\ | \\_/ || |  --  \\ 
 |_|\_\\   /_____// |______//  \____//  |______// 
 `-` --`   `-----`  `------`    `---`   `------`