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

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