發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : FIR filter design