أرسل هذا في رسالة قصيرة: Lead-free ternary perovskite compounds with large electromechanical strains

  _____     ______   _    _     _____     ______  
 /  ___||  /_   _// | || | ||  |  ___||  /_   _// 
| // __     -| ||-  | || | ||  | ||__    `-| |,-  
| \\_\ ||   _| ||_  | \\_/ ||  | ||__      | ||   
 \____//   /_____//  \____//   |_____||    |_||   
  `---`    `-----`    `---`    `-----`     `-`'