發送短信 : Characterization of lead-free bismuth titanate (Bi<inf>4</inf>Ti <inf>3</inf>O<inf>12</inf>) synthesized by a modified oxalate co-precipitation method

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