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

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