The core is a set which satisfies a system of weak linear inequalities, so it is closed and convex.
中心是一个满足弱线性不等式的合集，因此它是封闭的、凸的。
In this paper, the uncertainty analysis and design problems for structural and multidisciplinary system were investigated in detail base on a non-probabilistic approach that is convex model theory.
本文基于不确定参量的凸集合描述，研究了结构和多学科系统的不确定性分析与考虑不确定因素的优化设计问题。
This paper discusses problems arising in system and control theory to a few standard convex optimization problems involving linear matrix inequality (LMI).
本文研究了出现在系统与控制理论中的一些标准的、包含线性矩阵不等式的凸优化问题。
Many important problems of system and control theory can be reformulated as linear matrix inequality convex optimization problems, which is numerically tractable.
系统与控制理论中的许多问题，都可转化为线性矩阵不等式约束的凸优化问题，从而简化其求解过程。
In this axiom system, we made a study of the coherent measures of risk and convex measures of risk, which is extended from the coherent measures of risk, and proved its representation theorem.
在一致性公理体系内，研究了一致风险测度的有关性质并由一致风险测度弱化部分条件后推广出凸性风险测度，并证明了它的表示定理。
The simulation results show that the tracking error of middle-convex and varying ellipse piston linear servo drive system can be reduced effectively by this method.
仿真结果表明，采用这种控制策略可以十分有效地减小中凸变椭圆活塞直线伺服驱动系统的跟踪误差。
At last, we establish systems of coincidence theorem and system of minimax theorems in G-convex under weaker assumptions. Our results generalize the corresponding results in recent literature.
最后，在较弱的假设条件下，讨论了G -凸空间中的重合点组定理与极大极小组定理，从而推广了近期文献的相关结论。
Firstly, a telescope system is made up with a concave lens and a long-focus convex lens, by which the angle of the parallel beam from the collimator can be change.
该方法借助一个焦距较长的凸透镜与被测凹透镜组成无焦系统，可以使准直管出射光束的张角发生改变；
The characteristics of negative temperature state system were discussed, and compared with the image-forming behavior of thin convex lens.
分析了处于负温度状态系统的特征，并将其与薄凸透镜成像特征作类比，阐明了应用类比法讲授负温度状态的优越性。
In the experiment we used convex-plane unstable resonator, and analysis the convex mirrors and gain medium thermal lens as a telescope system.
实验采用凸平直线非稳腔，将凸面镜和增益介质热透镜效应等效为望远镜系统进行分析。
We assume that the motion of controlled object is describedby linear ordinary differential equations with variable coefficient, and the final states ofthe system form a convex region of phase space.
受控系统的运动设为变系数线性常微分方程组所描述，而系统的终点状态是相空间内的某一凸性区域。
As the pump light incident port of the heating cylinder is provided with the convex lens to increase the light intensity of pump light, the performance of the cavity-cell system is guaranteed.
在加热筒抽运光入射端口加装凸透镜增大抽运光光强，确保了腔泡系统性能。
The feature of convex-die is analysis by GT technology, and it's classification and coding system is designed by using characteristic code in this article.
应用成组技术对冷冲模凸模的特征进行了分析，采用特征代码设计了其零件分类编码系统。
Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.
在将高斯光束整形为平顶光束的整形系统中，由两个非球面镜组成的系统是比较简单的结构形式，该系统由平凹镜和平凸镜组成。
Among the reshaping systems converting a Gaussian beam to a flattop beam, the system composed of a plane-concave and a plane-convex lens, is a relatively simple structure.
在将高斯光束整形为平顶光束的整形系统中，由两个非球面镜组成的系统是比较简单的结构形式，该系统由平凹镜和平凸镜组成。
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