發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Indentation and external pressure on subsea single wall pipe and pipe-in-pipe