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

導出完成 — 

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