أرسل هذا في رسالة قصيرة: A mathematical model used in flow lines for performance measurement and system improvement

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