發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Effect of two-stage sintering on phase formation, microstructure and dielectric properties of perovskite PMN ceramics derived from a corundum Mg4Nb2O9 precursor