أرسل هذا في رسالة قصيرة: Resilience of Flat Slab Structures in Different Phases of Progressive Collapse

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