發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : High transparency Pr:Y₂O₃ ceramics: a promising gain medium for red emission solid-state lasers