Text this

Number:

Provider:

CAPTCHA:

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

Please enter what you see:

Text this: Peningkatan perpindahan kalor konveksi dengan cara penyisipan kawat spiral pada aliran dalam pipa=Convection Heat Transfer Enhancement by Inserting a Spiral Wire Inside the Tube