發送短信

數:

提供者:

CAPTCHA:

  ______   __   __   _____     _    _    _    _   
 /_   _//  \ \\/ // |  __ \\  | || | || | || | || 
 `-| |,-    \ ` //  | |  \ || | || | || | || | || 
   | ||      | ||   | |__/ || | \\_/ || | \\_/ || 
   |_||      |_||   |_____//   \____//   \____//  
   `-`'      `-`'    -----`     `---`     `---`

Please enter what you see:

發送短信 : Uncertainty principles for linear and quadratic time-frequency representations