在集合论和有关的数学分支中，给定集合 S 的子集的搜集 F 叫做 S 的子集族或 S 上的集合族。更一般的说，无论什么任何集合的搜集都叫做集合族。
利用混合单调分解方法研究离散非线性、时变凸多面体系统族的线性状态约束集合的鲁棒正不变性。
In this paper, the robust positive invariance of given linear state constraint sets of uncertain discrete time systems is studied by means of the mixed monotone decomposition method.
本文利用混合单调分解方法来研究离散时滞线性凸多面体系统族的线性状态约束集合的鲁棒正不变性。
In this paper, the robust positive invariance of given linear state constraint sets of uncertain discrete-time delay systems is studied by means of the mixed monotone decomposition method.
新族学集合了城乡近代宗族精英，其中，新乡绅在新族学及其校董会中扮演了特别重要的角色；
They had close relations with prominent clans in the countryside, and took the form of clan organizations.
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