本文对几类特殊图的强符号控制函数及强符号控制数进行了研究，给出了完全图、完全二部图、路及圈的强符号控制数。

With the definition of the strong signed domination function and the strong signed domination number of a graph, some lower bounds of the strong signed domination number about graph are obtained.

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当然，强密码可能难以记住，并且当您需要收集和记住另一个 8 字符的密钥（数字、标点符号及其组合）时，情况变得更复杂。

Of course, strong passwords can be difficult to remember, and the strain only worsens as you collect and memorize yet another eight-character key (of, say, numbers, punctuation, and mixed case).

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性能分析表明OEHCBSS可实现性强、性能优，特别是其光符号替换处理器具有通用性强、速度快等特点。

The evaluation of performance shown that the OEHCBSS is easy to realize and high performance, especially its symbolic substitution processor is multi function and high speed.

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