If you have a requirement to run multiple copies of message flow within a broker, use additional instances of the message flow within an execution group.
如果您需要在一个代理中运行消息流程的多个副本，请使用执行组中的消息流程的其它实例。
The portable signal lamp has the advantages of convenient use and various signals. The utility model can satisfy the requirement of multiple actual use.
该手提信号灯使用方便，信号多样，可满足多 种实际使用需求。
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