查询词典 subscript

It is proved that two sequences of Markov maps on the circle generated homeomorphic inverse limit spaces if each pair of the bounding maps with the same subscript are of the same Markov type with respect to a fixed arrangement of the two partitions.

证明了圆周上两个关于两组固定分点的Markov映射列在相同下标的两个约束映射总是关于两组分点的固定次序Markov同型的条件下生成同胚的逆极限空间。

Based on a delay-dependent bounded real lemma, the condition under which a decentralized robust H(subscript ∞) output feedback controller exists is derived and it is available to be attributed to a solution to the problem of nonlinear matrix inequality which can be expressed in terms of a homotopy function properly selected. Then, with the homotopic iteration method and the Schur complement lemma introduced, the solution can be converted into an iterative solution to the linear matrix inequality.

基于一个时滞依赖有界实引理，将系统鲁棒分散H动态输出反馈控制器的解归结为一个非线性矩阵不等式的求解问题；选取适当的同伦函数来表示该非线性矩阵不等式，采用同伦迭代算法及Schur补引理，将求解非线性矩阵不等式转化为线性矩阵不等式的迭代求解问题。

Based on two algebra Riccati equation method especially the structure of the system Hamilton matrix and system observability theory, the role of invariant zeros in constructing system reduced order controllers was given. That is, by the suitable selection of free parameters of the system H(subscript ∞) controller, some points which were symmetry with the unstable invariant zeros about the imaginary axis became the stable poles of the system controller which were not observable and could be reduced from the system, thus could get further reduced order controller.

基于2代数黎卡提方程方法，特别是系统Hamilton矩阵的结构特点和系统可观测性理论，论述了不变零点在构造系统降阶控制器中所起的作用，即通过选择控制器的自由参量，使某些不稳定的不变零点关于虚轴对称的点构成系统控制器不可观的稳定极点，从而实现了控制器进一步降阶。

This is because of the impurity nitride M(subscript mN in glass.

本文认为这是玻璃内部所含的杂质氮化物M

The proofs of the Zero theorem and indefinite integral ∫(superscript 1)(subscript 0)e(superscript -x^2) are given by research learning method.

本文论述了如何应用研究性学习方法证明零点定理及不定积分∫e(上标-x^2)dx，其方法简便，理论性强，对培养学生的创新能力有一定的作用。

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By solving a linear matrix inequation, we can obtain the robust H(subscript ∞) controller.

通过求解一个线性矩阵不等式－LMI，即可获得鲁棒H控制器。

Infinite sequence same- flowing to 3a a belong to N(subscript d was constructed.

另外对 3a a属于N(下标 d型奇数，构造出与3a同汇的无穷数列。

Meanwhile, they show high abundances of Sr and Ba and high Sr/Y and La/Yb. The volcanic rocks have varied and enriched Nd isotopic compositions ε(subscript Nd=-11~-17, which plot intermediately between the field of the ancient continental crust and the field of the enriched subcontinental lithospheric mantle. These geochemical signatures indicate that the volcanic rocks of the Tiaojishan and Donglingtai Formations were originated from a process of hybridization between the enriched mantle-derived mafic magma and the lower continental crust.

火山岩的钕同位素成分变化大，且相当富集ε(下标 Nd=-11~-17，都分布在古老下地壳和富集地幔之间，因此推断北京西山地区髫髻山组火山岩和东岭台组火山岩的形成与富集地幔起源的基性岩浆与古老下地壳组分相互作用有关。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失