Report copyright - 個人行動數位通訊簡介 - I-Shou Universityspaces.isu.edu.tw/upload/18833/3/comm/Ch14_cch_1.pdf · 2011-01-04 · isu 2. 個人行動數位通訊之特徵 使用者需求 隨時隨地通訊
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