أرسل هذا في رسالة قصيرة: Synergy between Brønsted acid sites and Lewis acid sites

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