أرسل هذا في رسالة قصيرة: The tuning of a small four-stroke spark ignition engine for flexible valve timings through numerical approach

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