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 _    _    __   __   _    _      ___              
| \  / ||  \ \\/ // | |  | ||   / _ \\    ____    
|  \/  ||   \ ` //  | |/\| ||  / //\ \\  |    \\  
| .  . ||    | ||   |  /\  || |  ___  || | [] ||  
|_|\/|_||    |_||   |_// \_|| |_||  |_|| |  __//  
`-`  `-`     `-`'   `-`   `-` `-`   `-`  |_|`-`   
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發送短信 : Unified method to analyze the hollow conducting waveguides by superquadric representation