系统的

Hamilton principle can be used in holonomic system and intrinsical linear nonholnomic system. The formulas of them are unified. Hamiltonian action is stability in intrinsical linear nonholnomic system.

本文将Hamilton原理应用到本质线性非完整系统，首次证明了在本质线性非完整系统中，Hamilton作用量为稳定的作用量；将完整系统和本质线性非完整系统的Hamilton原理从形式和本质上统一起来。

In the last chapter, on the basis of theories in paper [4, 5], the notions of strong mixing, weak mixing, generator and expansion of the variable-parametric dynamical system are introduced, it turns out that in variable-parametric dynamical system strong mixing implies weak mixing and then implies transitivity; it is proved that if and both are variable-parametric dynamical system, F conjugates with G , the members of F are communicate with each other and the members of G are also communicate with each other, what's more, they are both homeomorphism, then F is strong mixing implies G has the same properties; futhermore, we prove that F is strong mixing implies F Devaney chaos in the sense of modification in variable-parametric dynamical system and that F Devaney chaos in the sense of modification if and only if G Devaney chaos in the sense of modification when semi-conjugate with and they both are communicate and homeomorphism; at last, we illustrate that F has generator if and only if it has weak generator, and we also prove that if F is expansion, then F has generator.

在第三章中，我们在文[4，5]的基础上，提出了变参数动力系统拓扑强混合、拓扑弱混合以及变参数动力系统的生成子、扩张的概念；证明了变参数动力系统拓扑强混合蕴含拓扑弱混合，进而蕴含拓扑传递；证明了：如果，为两个变参数动力系统，F与G拓扑半共轭，且F两两可交换，G两两可交换，它们均为同胚映射，那么F拓扑强混合，则G也有同样的性质；本章还证明了变参数动力系统拓扑强混合蕴含F在修改的意义下Devaney混沌；在此基础上得出了：如果变参数动力系统与变参数动力系统拓扑半共轭，它们都两两可交换，并且它们均为同胚映射，那么F在修改的意义下Devaney混沌当且仅当G在修改的意义下Devaney混沌；得出了F有生成子当且仅当F有弱生成子；如果F是扩张的，则F有生成子。

An activity of a file system (such as the High Performance File System, HPFS, or the Andrews File System, AFS) in which cached meta data (data about the structures of the file system) is periodically written to the file system's permanent store.

在文件系统比如高性能文件系统HPFS或Andrews文件系统AFS中，是指将缓存中的元数据关于文件系统结构的数据周期性地写回文件系统的永久存储器中的一次写动作。

At the same time, to make users maintain their system conveniently, we add a human-computer dialogue equipment in the system, users not only can observe all the state of the system but also can deal with the obstacle quickly and efficiently according to the alarm data , which applied by the equipment. It exhibit the humanization design in the new type electric control system of hoist much more.

同时为了用户的操作维护更加方便高效，系统使用了本公司开发的友好人机交互系统，使用户可以观察到系统的所有状态，并可根据该设备提示的报警信息来对系统进行快速有效的故障处理和日常系统维护，更加体现了起重机新型电控系统的人性化设计。

First of all, the control of control system in accordance with requirements of statistical I / O points; Secondly, the PLC hardware selection and I / O address assignment; the final control system design software program, the most control of elevator control system.

首先根据控制系统的控制要求统计I/O点数；其次，进行PLC硬件选型及I/O地址分配；最后设计出控制系统软件程序，最电梯控制系统进行控制。

The stability theory of feedback system and isolated vibration of STM is studied, the method of operating point determinated for STM feedback system and the designing project of isolated vibration system for STM were proposed, the unstability problem of inchworm was overcome.

论文研究了STM反馈系统的稳定性和系统隔振的理论，提出了确定反馈系统工作点的有效方法和隔振系统的设计原则，并设计和制作了STM反馈和隔振系统。

The general development on direct current tuning-speed system is introduced in the first chapter briefly; form chapter 2 to chapter 5, the hardware design and calculation of the system are discussed indetail.

本文第一章简要介绍了直流调速系统的一般发展状况；从第二章到第五章讨论了系统硬件设计与计算；第六章给出了系统软件设计及流程图；最后一章对该调速系统的优缺点进行了总结。

Ultimate analysis management information system's development agent, as well as management information system in network and integration, intellectualization, platform type management information system three aspect trends of development.

最后分析了管理信息系统的发展动因，以及管理信息系统在网络化及集成化，智能化，平台式管理信息系统三方面的发展趋势。

In a process computer system, the means for interconnection between the computer system and the process interface system.

在过程控制计算机系统中，连接计算机系统和过程控制接口系统的线路。

However, in many practical systems, especially, in large-scale systems, some of the interconnections may be regulated directely.

然而，在诸多实际系统、尤其是大系统中，系统的关联关系并非不可直接调节。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐