Damaged condition and residual capability to resist failure load of a structure under seismic action are important for seismic optimum design and post-earthquake strengthening.

结构在地震作用下的损伤状况及其抵御破坏荷载的残余能力，是抗震优化设计和震后工程加固的重要依据。

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In this paper, the fuzzy reliable optimum design's mathematical model of the spur gear under the action of the sliding friction is set up by using the fuzzy and reliable theory.

通过应用模糊设计理论和可靠性设计理论，建立了摩擦力作用下直齿圆柱齿轮传动的模糊可靠性优化设计的数学模型，并对其进行优化处理。

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The theory was made up of such basic concepts as action system, action structure, action privilege and social optimum.

科尔曼的理性选择理论是由包括行动系统、行动结构、行动权利以及社会最优等四组基本概念构成的。

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