發送短信 : Wave interaction with one or two rows of closely spaced rectangular cylinders

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