發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Pengaruh nilai tahanan pentanahan terhadap tegangan pelepasan arester pada jaringan distribusi 20 KV sistem multigrounding