發送短信 : Energy absorption of metallic and composite tubes

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