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