أرسل هذا في رسالة قصيرة: A DEEP STUDY OF HYDRAULIC FRACTURING TREATMENT DESIGN TO IMPROVE PROPPANT SCHEDULING METHOD

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