發送短信

數:

提供者:

CAPTCHA:

 ______    _    _     ______   __   __   _    _   
|      \\ | || | ||  /_   _//  \ \\/ // | || | || 
|  --  // | || | ||  `-| |,-    \ ` //  | || | || 
|  --  \\ | \\_/ ||    | ||      | ||   | \\_/ || 
|______//  \____//     |_||      |_||    \____//  
`------`    `---`      `-`'      `-`'     `---`

Please enter what you see:

發送短信 : Cooling of liquid in a tube under rotation