أرسل هذا في رسالة قصيرة: Effect of vibro- milling time on phase formation and particle size of ZnNbO6 nano-powders

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