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

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發送短信 : Wall effect on pressure drop in packed beds