أرسل هذا في رسالة قصيرة: Effect of annealing time on electrical and mechanical properties of 0.7(Pb(Zr<inf>1/2</inf>Ti<inf>1/2</inf>)O<inf>3</inf>) - 0.3(Pb(Zn<inf>1/2</inf>Nb<inf>2/3</inf>)O<inf>3</inf>ceramics

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