藍牙4.1 4.2 5.0_藍牙5.1：新功能及其重要性

藍牙4.1 4.2 5.0 Bluetooth SIG 藍牙SIG Bluetooth 5.1 brings new 「direction-finding」 features that will let Bluetooth devices pinpoint physical location to the centimeter, aiding in indoor positioning. This

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