xiaxiaodedu 发表于 2019-1-23 14:42 作为近距离频段无线应用，蓝牙以后被应用的更广泛，和5G射频相辅相成。
Undo
Redo
Table
Removeformat
Autotypeset Left Center Right
FloatLeft FloatRight Orderedlist Unorderedlist
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