A method of optimum design of rein forced concrete frame structure based on reliability is proposed, which integrates advantages of the reliability analysis and optimum design.

提出了一种融结构可靠性分析与结构优化设计于一体的钢筋砼框架结构的可靠性优化设计方法。

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It points out that under current situation, the optimum design of electric propulsion ship's central cooling system will raise the reliability and economy of system operation.

在目前条件下，通过对电力推进船舶中央冷却系统的优化设计，将会提高系统运行的可靠性和经济性。

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The aim and scheme for optimum design of the off-circuit tap-changer the method to simplify structure and the way to improve reliability are expounded.

阐明了无励磁分接开关优化设计的目标和方案、简化结构的办法及提高可靠性的途径。

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