أرسل هذا في رسالة قصيرة: PERFORMANCE ANALYSIS OF HELICAL SCREW EXPANDERS IN LOW TEMPERATURE ENERGY RECOVERY

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