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

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發送短信 : Radiation of open-ended waveguides through a multi-layer superstrate