發送短信 : A butterfly-accelerated volume integral equation solver for broad permittivity and large-scale electromagnetic analysis

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