Pointing out the multi-polar linear structure of the coal-mining area and the multi-core structure of theindustrial and commercial area in Fushun coal region, then interpreting the reasons.

第三，发现抚顺市存在着明显的二元城市形态与内部结构，采煤区域的多级直线型结构与工商业区域的多核心组合式结构共存；

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A kind of rigid polymer microsphere with core shell structure was synthesized by multi step composite emulsion polymerization technique.

通过多步复合乳液聚合方法合成了一种具有核壳结构的刚性聚合物微球。

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It takes CORBA as the core technique, adopts multi-layer distribution system structure and the design facing to the object.

它以CORBA为核心技术，采用多层分布式的体系结构、面向对象的设计。

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