The results demonstrated that the response surface method in structural optimization of impacting energy absorption was feasible, and had merits of high computing efficiency and short computing time.

研究结果表明响应面法应用于碰撞吸能的结构优化问题上是可行的，具有提高计算效率，节省计算机时间等优点。

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Two of optimization guidelines are minimal communication cost and minimal response time.

使通讯费用最小，响应时间最短是两个优化准则。

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Data warehouses stores volumes of historical data, and OLAP applications involve complex queries on these data. Since response time should be small, query optimization is critical.

数据仓库存储大量历史数据，OLAP应用涉及到对大面积历史数据的复杂查询，查询优化是提高OLAP响应速度的关键。

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