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

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發送短信 : EM fields inside a prolate spheroid due to a thin circular loop: A higher-order perturbation approach