أرسل هذا في رسالة قصيرة: Design, fabrication, and testing of three-dimensional miniaturized rectangular cavity resonator based on metamaterial

  _  _    _    _    __   _    _    _   __    __  
 | \| || | || | || | || | || | || | || \ \\ / // 
 |  ' || | || | || | '--' || | || | ||  \ \/ //  
 | .  || | \\_/ || | .--. || | \\_/ ||   \  //   
 |_|\_||  \____//  |_|| |_||  \____//     \//    
 `-` -`    `---`   `-`  `-`    `---`       `