發送短信 : The Green's function for the Broadwell model with a transonic boundary

  _____     _____     _____     _____    _____    
 /  ___||  |  ___||  / ____||  |  ___|| |  __ \\  
| // __    | ||__   / //---`'  | ||__   | |  \ || 
| \\_\ ||  | ||__   \ \\___    | ||__   | |__/ || 
 \____//   |_____||  \_____||  |_____|| |_____//  
  `---`    `-----`    `----`   `-----`   -----`