أرسل هذا في رسالة قصيرة: Numerical analysis of the mixing characteristic for napier grass in the continuous stirring tank reactor for biogas production

 _    _    _    _     _____     _____             
| || | || | || | ||  |__  //   |  ___||     ___   
| || | || | || | ||    / //    | ||__      /   || 
| \\_/ || | \\_/ ||   / //__   | ||__     | [] || 
 \____//   \____//   /_____||  |_____||    \__ || 
  `---`     `---`    `-----`   `-----`      -|_|| 
                                             `-`