發送短信 : Location identification of line supports using experimental modal analysis

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