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  _____      ___      ____     __   __            
 |__  //    / _ \\   |  _ \\   \ \\/ //   ____    
   / //    | / \ ||  | |_| ||   \ ` //   |    \\  
  / //__   | \_/ ||  | .  //     | ||    | [] ||  
 /_____||   \___//   |_|\_\\     |_||    |  __//  
 `-----`    `---`    `-` --`     `-`'    |_|`-`   
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發送短信 : Performance analysis of partial relay selection with feedback delay