查询词典 two-pipe system

First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

This paper consists of three parts: Firstly, we discuss a nonautonomous -species two-patches cooperative Lotka-Volterra diffusion system. Using Brouwer fixed-point theory and Liapunov function, under some conditions, we obtain that the system has a unique globally asymptotically stable positive periodic solution. Secondly, we consider a kind of nonautonomous predator-prey model, in which preys are with stage structure and the predator are with two patches.

中文摘要：本文分三部分讨论三类生态模型周期解或概周期解的存在性及全局渐近稳定性等内容：第一部分讨论了两斑块种群的互惠Lotka-Volterra扩散系统，运用不动点理论和构造Liapunov函数，得到了系统存在唯一一个全局渐近稳定的正周期解的充分条件。

For two kinds of servo systems that the output can be directly measured or not directly measured, the direct compensation method and the BP neural network compensation method for backlash nonlinearity were presented. Simulation results for a tank barbette tracking system show that these two kinds of compensation methods can successfully eliminate the influences produced by backlash nonlinearity, and improve the system accuracy.

针对输出直接可测和不直接可测两种伺服系统，提出了间隙非线性的直接补偿法与BP神经网络补偿法，对坦克炮塔跟踪模型进行的计算机仿真表明这两种方法均可成功消除间隙非线性引起的极限环，提高系统精度。

In the paper, under the condition of that a singular system is admissible, stable controls for a bilinear singular system are designed by using two kinds of Lyapunov function respectively, and the two above control display different forms. At the same time, the control restrained by upper and lower bound is examined.

利用所构造的两种广义Lyapunov函数，在广义系统容许的条件下，分别设计了双线性广义系统的稳定控制，且上面存在的2种控制具有不同的表现形式。

Trade cost theory, market validity theory and Commission theory are the economic foundation of Bill broker"s system. Two commission models under symmetry and asymmetry information between the investor and bill broker was structured in view of above, probing into two major interests subjects" distribution mode in interests, risk and encourage goal, and establishing the economies" foundation for the standardization development and perfection of bill broker"s system.

交易成本理论、市场有效性理论和委托—代理理论是证券经纪人制度的经济学基础，据此，笔者构建了信息对称和信息不对称两种情况下投资者和证券经纪人之间的委托—代理模型，探讨两大利益主体在利益、风险和激励上的目标分配模式，为证券经纪人制度的规范化发展和完善奠定了经济学基础。

A binary star is a system in which two stars revolve around each other; a binary compound; the binary number system has two as its base.

双星是一个由彼此环绕的两个星组成的系统；二元混合物；二进制的二进制的或与之有关的。

Two systems both adopt Browse/Server mode,two pieces of systematic server end application program install on Windows NT's server of the sports department,The student can use a system on any node of campus network,The user beyond campus network can use a system through Internet.

两个系统都采用Browse/Server模式，二个系统的服务器端应用程序安装在体育部的Windows NT服务器上，学生可以在校园网的任何一个节点上使用本系统，校园网以外的用户可以通过Internet使用本系统。

The Closed Circuit Television system is an important component of the safe precautionary technology system, and together with the other two major key elements, which are the warning system, and the entrances control system forms the modern comprehensive safe precautionary technology system.

电视监控系统是安全防范技术系统的重要组成部分，它与入侵报警系统和出入口控制系统共同构成现代综合安全防范技术系统的三大要素。

In these portion,the article begins the study of tone sandhi from the point view of two-character phrases and three-character phrases,which is also the focus and difficult point as well.On the basis of substantial materials of Dingzhou dialect,the author elaborates its rules and principles of tone sandhi of the general phrases and those with light tones,and reiterative location.the author puts his views as follows: 1.The rules of tone sandhi of two- character phrase are simple and unitive. 2.The complex of the phrase with light tones lies in the combination of the first tone and light tone.In the case,there are two different pronunciations in Dingzhou dialect.The author guesses it is the coexist of ancient pronunciations and common spoken Chinese. 3.The tone sandhi of general three-character phrases on the basis of the rules of that of two- character phrases,using the grammar structure of the three-character phrases as the restricted conduction,which function jointly. 4.The rules of tone sandhi of three- character phrases with light tones are restricted only by that of the two- character phrases with light tones and thus are foreign to grammar structure. 5.The tone sandhi of the words with reiterative location has their own system.

这两章中，作者采用直接调查法，社会语言学方法分别从一般字组、含轻声字组和叠音词字组三个方面对定州方言连读变调进行详尽地描写，文章中既有对连读变调的共时性描写，也有对连读变调历时性推测，总的来讲笔者认为定州方言变调具有一定的系统性，主要表现在以下几个方面：两字组连读变调规律简单统一，含轻声字两字组内部规律较为复杂，但是具有很强的一致性；定州方言含轻声两字组变调的复杂性主要表现在阴平+轻声的组合中，在这种情况下，定州方言有两种读音方式，推测它是语音存古现象和普通话语音并存的结果；一般三字组连读变调以两字组连读变调规律为基础，以三字组的语法结构为制约条件，二者共同发生作用；轻声三字组变调规律只受轻声两字组变调规律的制约，与语法结构无关；叠音词的变调规律自成系统。

After investigating the evolving of tax systems in the world and the rising of income tax in developed countries, the author suggested the way to optimizing Chinese tax revenue structure is to set up a two-main-body tax system with turnover tax and income tax. The conceived outline is to augment the income taxation, to adjust the comparative proportion between turnover tax and income tax, and hence to change the distorted tax system and set up a two-main-body one, in which turnover tax and income tax can function congenially and complementally.

在分析成因、指出弊端和改革必要性后，本文通过对税制演变的规律总结和发达国家所得税上升为主体税种的过程考察，提出优化我国税种收入结构的方向是建立双主体税种结构，总体思路是在稳定流转税收入的情况下，增加所得税的规模及在税收收入中的比重，以动态的方式改善商品流转税和所得税的相对比例，改变我国税种收入结构失衡、税制功能扭曲的现状，构建一个流转税和所得税结构协调、功能互补的双主体税种结构。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。