發送短信 : Mathematical description of pressure drop profile for the 1-valve and 2-valve bed collapse experiment

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