這個東西，是通過電磁波傳送數據。數據的碼率很低，輻射應該很小，比起手機可以忽略不計。

來源: TBz 於 2013-03-11 22:23:03 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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