發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Toggling near-field directionality via polarization control of surface waves