發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : GaInNAs double-barrier quantum well infrared photodetector with the photodetection at 1.24 μm