أرسل هذا في رسالة قصيرة: Design of fixed-pitch variable-speed wind turbine controller

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