A non complete 6 connected graph is called contraction - critical if it has no any 6 - contractible edge.

如果6连通图的一条边收缩后使得所得到的图仍是6连通,则这条边称为6可收缩边.

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Appear to the exploration of gap of income of contractible andand rural dweller so especially important.

所以对缩小城乡居民收入差距的探索显得尤其重要.

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Do we and the in the process difference the competitor competes have how old and contractible?

我们和竞争对手竞争的过程中的差距有多大缩小?

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By objective the cycle racing model of contractible , clipper - built automobile body fleets on cycle racing field.

按实物缩小 、 流线型车身的赛车模型在赛车场上疾驰.

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