發送短信 : Efficiency of high-order accurate difference schemes for the korteweg-de vries equation

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