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Text this: Heat transfer performance of multiple holes impingement cooling technique

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

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