發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Superoscillatory quartz lens with effective numerical aperture greater than one