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

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發送短信 : Levy solutions for vibration of multi-span rectangular plates