أرسل هذا في رسالة قصيرة: Microstructure and electrical properties of (1-x)Bi<inf>0.5</inf>(Na<inf>0.80</inf>K<inf>0.20</inf>)<inf>0.</inf>5TiO<inf>3</inf>-xLiNbO<inf>3</inf>lead-free piezoelectric ceramics

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