發送短信 : Investigation of a crack in a soft gel

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