أرسل هذا في رسالة قصيرة: Performance of Pile Groups Subjected to Surface Explosion

 _    _    _    _     ______     ___     __   _   
| || | || | || | ||  /_   _//   / _ \\  | || | || 
| || | || | || | ||    | ||    | / \ || | '--' || 
| \\_/ || | \\_/ ||   _| ||    | \_/ || | .--. || 
 \____//   \____//   /__//      \___//  |_|| |_|| 
  `---`     `---`    `--`       `---`   `-`  `-`