發送短信 : Diagnosis of nonstationary processes using reduced interference time-frequency distribution

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