下载的序列号不能传输。

Downloaded serial Numbers may not be transferred.

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短消息网关系统之中传输的每一条命令都有一个序列号，序列号由命令源节点产生并唯一标记一条命令；

Every command transmitted in the Short Message Gateway system has a sequence number, which is generated by the command source node and marks a command exclusively;

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