發送短信

數:

提供者:

CAPTCHA:

 _    _    __   __   __   _    _    _     ______  
| \  / ||  \ \\/ // | || | || | || | ||  /_   _// 
|  \/  ||   \ ` //  | '--' || | || | ||  `-| |,-  
| .  . ||    | ||   | .--. || | \\_/ ||    | ||   
|_|\/|_||    |_||   |_|| |_||  \____//     |_||   
`-`  `-`     `-`'   `-`  `-`    `---`      `-`'

Please enter what you see:

發送短信 : Phase and morphology evolution of corundum-type Ni<inf>4</inf>Nb<inf>2</inf>O<inf>9</inf>powders synthesized by solid-state reaction