أرسل هذا في رسالة قصيرة: Characterization of micro-crystalline lead tungstate with different morphologies produced by the sonochemical process

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