發送短信 : Lightning performance of covered conductors overhead distribution lines

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