أرسل هذا في رسالة قصيرة: Preparation and characterization of Al <inf>2</inf>O <inf>3</inf>-25 mol% ZrO <inf>2</inf> composites

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| || | || | || | ||  | |_| ||  / //\ \\ | || | || 
| \\_/ || | \\_/ ||  | .  //  |  ___  ||| \\_/ || 
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  `---`     `---`    `-` --`  `-`   `-`   `---`