أرسل هذا في رسالة قصيرة: Effects of potassium fluoride salt additive on the sintering temperature and dielectric properties of BaFe0.5Nb0.5O3 ceramics

             ___      _____      ___      _____   
  ____      / _ \\   / ____||   / _ \\   /  ___|| 
 |    \\   | / \ || / //---`'  / //\ \\ | // __   
 | [] ||   | \_/ || \ \\___   |  ___  ||| \\_\ || 
 |  __//    \___//   \_____|| |_||  |_|| \____//  
 |_|`-`     `---`     `----`  `-`   `-`   `---`   
 `-`