你需要将可靠性放在软件层面。
因此，利用现有的单播技术在软件层面上实现多播是目前和今后很长一段时间内的很好的选择。
Hence, multicast should be implemented in software in such systems by sending multiple unicast messages, and therefore is suitable for current and future systems.
该嵌入式RFID中间件软件层面完全由GNU C实现，可以方便移植到嵌入式系统上，能够满足普通商业应用要求，具有一定的实用价值。
The RFID middleware accomplished via GNU C totally, so it can be easily transplanted to embedded systems. It has some practical value which can meet general business application's requirements.
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