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|  __ \\   |  ___||   ____      / _ \\   \ \\/ // 
| |  \ ||  | ||__    |    \\   / //\ \\   \   //  
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 -----`    `-----`   |_|`-`   `-`   `-`  `-`  --` 
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發送短信 : Study of harmonic RFID : chipless RFID