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26 天
短距无线技术识别:蓝牙、Wi-Fi、BLE、Zigbee、NFC、RFID、Z-Wave
由于NFC通过两个电磁耦合的线圈进行通信,操作范围仅约一英寸或两英寸。这两个耦合线圈基本上形成了一个空气芯变压器。 06-RFID RFID射频识别技术是一种无接触的自动识别技术,它主要是利用射频信号来进行信息的传递。只要在具体的物品上贴上或者嵌入RFID ...
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今日热点
Pro-Trump group renamed
Judge pauses buyout offer
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Ippei Mizuhara sentenced
Passenger breaks window
Weekly jobless claims rise
Former Dolphins WR dies
CDC resumes publication
FAA to slow arrivals at DCA
Confirmed as OMB director
Panama denies US claim
MN power-sharing agreement
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Workers go on strike
DOJ sues Illinois, Chicago
Philippines plane crash
Sports reporter dies at 27
Committee vote delayed
22 states sue New York
Hottest January on record
2nd OH shooting victim dies
Winter storm hits Northeast
US mortgage rates drop
Perfect boiled egg recipe
Changes transgender policy
First embryo using IVF
US flu cases are peaking
Signs order sanctioning ICC
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