Parameter optimization of satellite system is a typical problem of MDO (Multidisciplinary Design optimization).

卫星总体参数优化是一个典型的多学科优化问题。

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Parameter optimization design is an important problem in pipeline network layout design.

参数优化设计是管网规划设计中的一个重要问题。

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This paper describes the operation principle of a simple phase sequence relay, its parameter calculating method, and the correlative relationship and optimization problem on element parameters.

本文阐述了一种简单的相序保护器的工作原理及其参数计算原则，讨论了元件参数之间的相对关系和优化问题。

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