發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : An optimal PMU placement method against measurement loss and branch outage