發送短信

數:

提供者:

CAPTCHA:

  _____     ______     _____    ______            
 /  ___||  /_   _//   / ___//  /_   _//     ___   
| // __     -| ||-    \___ \\   -| ||-     /   || 
| \\_\ ||   _| ||_    /    //   _| ||_    | [] || 
 \____//   /_____//  /____//   /_____//    \__ || 
  `---`    `-----`  `-----`    `-----`      -|_|| 
                                             `-`

Please enter what you see:

發送短信 : Determining the critical condition for turbulent transition in a full-developed annulus flow