أرسل هذا في رسالة قصيرة: Dynamic response of a multi-span beam on one-sided point constraints subject to a moving load

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