To read a diagram, imagine that a token, or thread of control, passes along the connectors from one action to the next.
在读取关系图时,假设有一个令牌或控制线程将连接线从一个操作传递给下一个操作。
If the action has no incoming control flow, it produces a token whenever it receives a message.
如果此操作没有传入控制流,它会在收到消息后立即生成一个令牌。
If the action has no incoming control flow, it produces a token whenever it receives a message.
如果此操作没有传入控制流,它会在收到消息后立即生成一个令牌。
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