规则是，一旦引入了关联表，复合度就“交叉”，如图12所示。

The rule is that the multiplicities "cross over" once the associative table is introduced, as indicated in Figure 12.

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此实例说明了必须遵循的规则集，以便Relationship Service自动维护动态关系的交叉引用。

This example illustrates the set of rules you must follow to enable the relationship Service to automatically maintain cross-references for your dynamic relationships.

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针对运输中的“必经点”问题，设计了特殊染色体编码、交叉与变异规则；

For solving the problems of the necessity - node, the special rules of coding, crossover and mutation are designed.

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