NFC is a short-range, high-frequency wireless technology which lets devices, primarily mobile phones, communicate with other NFC devices in order to exchange data.
近场通信是一种近距离、高频率无限技术，可以允许手机等设备和其它近场通信设备进行数据交换。
Bluetooth is a new wireless standard among them, it makes it possible that data and voice devices in network can connect each other and communicate rapidly and flexibly.
蓝牙就是其中的一种无线标准，它使网络中的数据和语音设备能够互连互通，实现快速灵活的通信。
Wireless DDN is one of such solutions for wireless data transport service, which is provided for customers to communicate among industry equipments on network platforms.
无线DDN就是中国移动利用已有的网络平台，为行业客户提供的机器到机器的无线数据传输业务。
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