أرسل هذا في رسالة قصيرة: Effect of transverse shear deformation and rotary inertia on the natural frequencies of rectangular plates with cutouts

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