發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Formation of nano-sodium niobate crystals in ferroelectric glasses and glass-ceramics of the Na2O-Nb2O5-Al 2O3-SiO2 system