这个过程由域分解、现有资产分析和目标服务建模的自顶向下、自底向上、中间向外技术的联合组成。

This process consists of a combination of top-down, bottom-up, and middle-out techniques of domain decomposition, existing asset analysis, and goal-service modeling.

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最后，对板肋在垂直于其跨度方向上肋顶和肋底相对位移的数据进行了分析，这种肋顶和肋底的相对位移是由肋梁受扭产生的。

Finally, torsion rule of ribs is been found through anglicizing the relative data of displacement, which is caused by torsion of tip and bottom of ribs.

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