發送短信 : Lecture Notes on Composite Materials

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