LLCD is NASA's first system for two-way communication using a laser instead of radio waves.
LLCD是NASA的第一个使用激光而不是无线电波的双向通信系统。
A simple RFID system consists of reader and transponder, by wireless two-way radio communication, target recognition and data exchange.
射频识别系统主要由读写器、应答器两部分组成，通过射频方式进行无线双向通信，完成目标识别和数据交换。
A simple RFID system consists of reader and transponder, by wireless two-way radio communication, target recognition and data exchange.
射频识别系统主要由读写器、应答器两部分组成，通过射频方式进行无线双向通信，完成目标识别和数据交换。
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