通信单元

In the chapter 4, the design of hardware and electrical drawings based on PCC is explained in detail.

第五章阐述软件设计的原则以及基于PCC的水电站现地控制单元的软件实现，在软件设计中还涉及到了通信程序。

In this thesis we introduce this theory into the traffic simulation of cloverleaf and provide a new method in research of the urban traffic simulation. In this system, we use the modeling method of multi-Agent to build the Road Agent, Vehicle Agent, Detector Agent, etc and also provide the intellective decision-making unit and communicate pipe for each Agent.

本文将多智能体技术引入到了立交交通仿真中，采用多智能体的系统建模思路，将车辆、道路、检测器等以智能体的形式建模，并为每个交通元素建立独立的智能决策单元及相互通信的通道，使整个交通仿真系统在各交通智能体的不断交互过程中完成整个仿真系统的运行。

The mobile communication terminal has a main body unit and an attachment.

本发明的移动通信终端具有主体单元和附件。

In ACF/VTAM, an unformatted session-initiation request for a session between two logical units.

在IBM的通信系统ACF/VTAM中，两个逻辑单元之间的一次非格式化的话路启始

It is feasible to build effectual, economic and banausic safe base of Intranet, through segment the net, set VLAN, control communication operation, bind IP and MAC and switch port base on the 3rd layer switch, use to achieve our basic requirements to the network safety in using information system.

通过三层路由交换机Passport8600，以机制所建立的集成制造单元网络系统为具体实例，通过网络分段，设置VLAN，通信业务管理控制，进行IP地址、MAC地址和交换机端口绑定等措施，建立了有效、经济、实用的网络安全基础平台。

Although it is the earliest-issued thesis on the study of computer radiation safety, people paid little attention. In 1983, a Swedish scientist published a pamphlet named Compromising Computer, in which the radiation leakage of computer was mentioned once again. In 1985, a Netherlandish scholar named Ike issued his study report on electromagnetic radiation from video display units of computers at the Third Conference on Computer Communication Safety Protection. At the same time he demonstrated how to use a black and white TV set to receive signals from a computer with radiation leakage.

这是最早发表的研究计算机辐射安全的论文，但当时没有引起人们的注意。1983年，瑞典的一位科学家发表了壹本名叫《泄密的计算机》的小册子，其中再次提到计算机的辐射泄漏问题。1985年，荷兰学者艾克在第三届计算机通信安全防护大会上，公开发表了他的有关计算机视频显示单元电磁辐射的研究报告，同时在现场作了用一台黑白电视机接收计算机辐射泄漏信号的演示。

Although it is the earliest-issued thesis on the study of computer radiation safety, people paid little attention. In 1983, a Swedish scientist published a pamphlet named Compromising Computer, in which the radiation leakage of computer was mentioned once again. In 1985, a Netherlandish scholar named Ike issued his study report on electromagnetic radiation from video display units of computers at the Third Conference on Computer Communication Safety Protection. At the same time he demonstrated how to use a black and white TV set to receive signals from a computer with radiation leakage.

这是最早发表的研究计算机辐射安全的论文，但当时没有引起人们的注意。1983年，瑞典的一位科学家发表了一本名叫《泄密的计算机》的小册子，其中再次提到计算机的辐射泄漏问题。1985年，荷兰学者艾克在第三届计算机通信安全防护大会上，公开发表了他的有关计算机视频显示单元电磁辐射的研究报告，同时在现场作了用一台黑白电视机接收计算机辐射泄漏信号的演示。

Although it is the earliest-issued thesis on the study of computer radiation safety, people paid little attention. In 1983, a Swedish scientist published a pamphlet named Compromising Computer, in which the radiation leakageof computer was mentioned once again. In 1985, a Netherlandish scholar named Ike issued his study report on electromagnetic radiation from video display units of computers at the Third Conference on Computer Communication Safety Protection. At the same time he demonstrated how to use a black and whiteTV set to receive signals from a computer with radiation leakage. His report caused a great reverberation in the world. From then on people began to treat this problem seriously.

这是最早发表的研究计算机辐射安全的论文，但当时没有引起人们的注意。1983年，瑞典的一位科学家发表了一本名叫《泄密的计算机》的小册子，其中再次提到计算机的辐射泄漏问题。1985年，荷兰学者艾克在第三届计算机通信安全防护大会上，公开发表了他的有关计算机视频显示单元电磁辐射的研究报告，同时在现场作了用一台黑白电视机接收计算机辐射泄漏信号的演示。

A case ofapplication of CAN bus on the distributed automatic system ofsubstation is illustrated.To meet the need ofautomatic controlsystem ofsubstation,a network is necessity because ofthe distributed control units ofthe substation.To shortenthe developed period of the system,an interface bridge between the RS232 and CAN bus is made.The result oftest run shows thatthe requirements ofsystem can be satisfied by the project.

摘 要：对一个把CAN总线应用到分布式变电所自动化系统的例子进行了分析，对于分布式变电所自动化系统来说，通信网络的效率、安全性和实时性具有重要意义，在实际工作中，通过在现行测量、控制和保护单元外增加一个RS232和CAN总线之间的转换器，构成变电所自动化系统的现场总线网络，试运行情况表明：该方案完全能满足系统的要求。

There are three problems that should be deliberated when constructing a typical distributed virtual environment: 1 the representation of complex model in virtual environment, usually there are many entities and data in environment that should be recognized carefully. 2 the network communication, update and synchronal information is needed for variable entities are distributed in different computers linked by network. 3 the controlling of participant's behavior.

一是复杂模型的表达，通常这样的系统中包含复杂的较大规模的场景数据以及为数众多的实体，需要对这些实体加以组织；二是网络通信，由于环境中存在诸多可变因素，需要通知其它节点机做相应的刷新和同步，同时，分布的计算单元之间也需要交换消息或数据；三是参与者行为的控制。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。