發送短信

數:

提供者:

CAPTCHA:

  _____     _____     _____      ___      ______  
 |__  //   |  ___||  /  ___||   / _ \\   /_____// 
   / //    | ||__   | // __    / //\ \\  `____ `  
  / //__   | ||__   | \\_\ || |  ___  || /___//   
 /_____||  |_____||  \____//  |_||  |_|| `__ `    
 `-----`   `-----`    `---`   `-`   `-`  /_//     
                                         `-`

Please enter what you see:

發送短信 : Double periodic composite right/left handed transmission line based leaky wave antenna by singular perturbation method