發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Synthesis of sharp 2-D filters using the frequency response masking technique