查询词典 hilbert problems

These two problems are converted to mathematical problems of solving some matrix inequalities and Riccati equations which are dependent on the time delays.

它们的可解充分条件可以化为与时滞相关的矩阵不等式和 Riccati方程的形式。

Do not use if you have skin depigmentation problems such as white patches on your skin, or if you have a family history of skin depigmentation problems, as an allergic reaction of skin irritation may cause loss of skin pigment.

不要使用如果你有皮肤脱色等问题上的白斑皮肤（所谓的治疗白癜风的一个条件），或如果你有家族病史的皮肤脱色问题，作为过敏反应的皮肤刺激可能会导致皮肤色素损失。

With the explosive incrase of Internet size, the number of users and the network applications, Internet is suffering more and more loss packets and some performance depravation problems, and network congestion is one of the severe problems.

随着Internet本身规模的迅速扩大、Internet用户数的剧增、以及网络应用类型的快速增加，网络正经历越来越多的包丢失和其他的性能恶化问题，其中一个比较严重的现象就是网络拥塞。

"Margin is a fundamental change in the market, therefore, will be derived from a series of problems, chronic problems of the capital market - insider trading - may also increase."

"保证金是在市场上的根本转变，因此，将由一系列问题产生，资本市场的长期问题-内幕交易-也有可能增加。"

Meshless method is a new numerical method on problem for determining solution of differential equation. It is an approximation method based on nodes, and doesn't need a mesh entirely or partly. Then the discontinuous problems and the extremely large deformations problems can be solved without the re-meshing techniques.

无网格方法是求解微分方程定解问题的一种新数值方法，它采用基于点的近似，可以彻底或部分地消除网格，因此在处理不连续和大变形问题时可以完全抛开网格重构。

Objectives: Substance use and physical abuse during pregnancy are known health problems that detrimentally affect maternal health and birth outcomes; however, many health professionals pay little attention to these problems. The aims of this study were to estimate the prevalence of substance use and physical abuse during pregnancy in different ethnic groups and to explore the effects on birth weight.

目标：物质使用及受虐是公认危害母体及胎儿之危险因子，但甚少受到医疗工作人员的关注，为协助妇女保健工作之推展，本研究系以问卷资料访谈评估不同种族妇女於怀孕期间物质使用及受虐经验对婴儿出生体重之影响。

The solution of some practical problems in engineering can be regarded as that of periodic solution of nonlinear autonomous systems according to the opinion of mathematics, The problems of this kind are analysed by means of the direct numerical method in this paper,The simple and convenient Draw Newton Method is applied for solving the parameter vectors in iteration course along with the calculation of a practical engineering problem.

日I崖旨J，'口工程中的一些实际问题往往可以归结为非线性自治系统，例如描述同步发电机暂态稳定性问题的转子摇摆方程，即是一典型的非线性自治系统。虽然可以用各种小参数摄动法求解非线性系统，但是这类方法是依据对线性系统的解进行"摄动"来逼近非线性系统解的。因而当系统

In this dissertation, the ideas of simulating directed Hamilton path problems by sticker systems are designed using their massive parallelism; Then some properties of directed graphs and sufficiency and necessity conditions of existing Hamilton paths in graphs are presented based on the analysis to directed Hamilton path problems according to the properties of languages generated by the sticker systems.

本文利用粘贴系统的巨大并行性，首先设计了模拟有向哈密顿路问题的粘贴系统，然后通过此粘贴系统所产生语言的性质对有向哈密顿路问题进行分析，给出了有向图的若干结构性质以及图中存在有向哈密顿路的充要条件。

In this dissertation, research work of near-field numerical simulation is briefly reviewed, some existing problems are analyzed, and the following problems in decoupling numerical simulation, which is a key research direction in present, are studied.

本文简要地回顾了近场波动数值模拟的研究工作，分析了存在的问题，并针对当前的一个主要发展方向—数值模拟的解耦技术，对下列问题进行了研究。

Because of reasons pointed before, a suit of new solution of GPS intelligent inspection system is presented in this paper. This system integrates PPC and GPS receive module compactly, conquers some problems such as instability of system work, fallibility and discommodity of operation. These problems are lead by PPC link GPS through inserting card or line.

鉴于以上原因，结合掌上电脑和GPS的新技术，本课题针对GPS智能巡检系统提出了一套新的解决方案，将掌上电脑和GPS接收模块高度集成为一体，克服了以前插卡或连线式GPS产品导致的系统工作不稳定、不可靠和操作不方便等问题。

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。