This paper introduces one accurate drawing method for working condition diagram to provide the operator of power plant with reliable basis.

介绍一种较精确的工况图画法，可以为电厂运行人员提供可靠的基础。

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The semantics of the message arrows in the diagram do, however, dictate that the message may be sent only if the condition is valid.

不过，图中消息箭头的语义规定只能在条件有效时发送消息。

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Our diagram for the while loop contains both a condition and an asterisk, signaling iteration, but as you can see the number of iterations is unavailable.

我们的while循环图既包含条件，又包含表明迭代的星号，但您会发现，没有迭代的次数。

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