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

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發送短信 : Origin of shrinkage, distortion and fracture of photopolymerized material