أرسل هذا في رسالة قصيرة: Effect of Bi<inf>2</inf>O<inf>3</inf> content on properties of (Na <inf>2</inf>O, K<inf>2</inf>O)-SiO<inf>2</inf>-CaO-Al<inf>2</inf>O <inf>3</inf>-B<inf>2</inf>O<inf>3</inf> glass system

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