發送短信 : Composite pipes subjected to bending loads

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