發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Outage bridging and trajectory recovery in visible light positioning using insufficient RSS information