أرسل هذا في رسالة قصيرة: Effect of poling on piezoelectric and ferroelectric properties of Bi0.5Na0.5Ti1-xZrxO3 ceramics

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