有关通信的

Based on the wide concerns about the Integrated Social Emergency Response Communications Systems,this paper mainly discusses the development strategies for digital trunking and emergency communications in China. The establishment of the state /province/city level integrated emergency response communications systems is very important. The plan and implementation of new generation Integrated Emergency Response Systems following the concepts of NGN and 3G evolution should be taken into consideration, The relationship between public networks and IERS should be correctively dealt with and actively coordinated. Besides, it is involved how to accelerate technology innovation, open correlative standards and interfaces, and promote effective interconnection and interoperation for operators and users to gain maximum benefits.

文章在论述目前广为关注的社会应急联动通信系统的基础上，探讨了中国数字集群及应急通信的相关发展策略，如有关国家/省/城市级应急联动通信的重要性，如何基于NGN及3G演进概念规划与建设新一代应急联动通信系统，如何正确处理与有机协调公众网络与专网应急联动通信之间的关系，如何加速技术创新，如何开放相关标准与接口、促进有效互联互通、维持多厂商环境下运营商及用户利益最大化等。

First, we study and research existing UAN and its protocols at home and abroad. And we do them abroad in deep-going way.

首先学习、研究了现有国内外有关通信网络及其协议，并对国外现有水声通信网络进行了较深入的研究和分析。

As a private mobile communication system, The digital trunkingmobile communication system was boomed in 1990's, and before this, the appliedprivate mobile communication systems in market are almost the analog systemwith analog voice and digital signalling. And there are no data referring to thesystem design and parameters chosen. It includes the wireless channel accessalgorithm of the mobile terminals, single base station capacity in large regional networks, link designing schemes between the switching control center and basestation as well as the study of the service quality for the multiple traffic. Theseindispensable parameters in design a digital trunking communication system arestudied in this dissertation and some instructive achievements can be got. To provethe correction of the theoretical study, the result was tested with the popularsystem of pan-European digital trunking communication system.

数字集群移动通信系统是九十年代中、后期兴起的专用移动通信系统的一种新体制，在此之前国际、国内市场使用的都是数字信令、模拟话音集群移动通信系统其涉及领域是模拟体制，对数字集群的系统设计的有关参数、方法等的选用及其性能表现并无成熟的文献可供参考，如移动终端的无线信道接入算法、大区组网单基站系统的容量、基站和交换控制中心间的链路设计和多业务种类的服务质量等都是数字集群基站子系统进行设计和开发必须解决的关键技术。

Professional technical ability concerning correspondence engineering of control:A machine and a machine principle and application c++ the buider program design the spot the programmable preface machine a principle and application calculator correspondence the net distance controls to exchange the fiber-optic correspondence of the principle correspondence principle ambulation the correspondence modern correspondence system.

掌握的有关通信工程的专业技能：单片机以及单片机原理及应用 c++buider程序设计现场可编程序器件原理及应用计算机通信网程控交换原理通信原理光纤通信移动通信现代通信系统。

This is the communication of the sampling theorem proof, we hope to inspire.

这是有关通信中的抽样定理的一些证明，希望能对大家有所启发。

In this paper we will discuss the problems of information processing, processing mode and circuits relevant to such processing for a newcommunication system--the time division multiplexing communicationsystem with defence time

本文介绍一种新的通信系统——时分保护制通信系统的信息处理问题，处理方式问题及与处理有关的电路问题。

On the chaos correspondence question, this article proposed the implicational method of chaos system in the secure communication system.

就混沌通信问题，本文提出了有关混沌系统在保密通信系统的实现方法。

I corresponded with him about his business prospects.

我与他通信有关他的生意前途问题。

Psychological trait has important effects on military work. Lots of research has been done in the fields of the military while little has been done on the signalmen. The aim of this research is to discuss the relationship between mental and vocational adaptation of signalmen and to set up psychological selection standard.

心理素质对军事作业有重要的影响，军事领域对此进行了大量的研究，但有关通信兵的研究尚未见诸报道，本文主要研究军队通信职业特点与通信兵应具备心理素质之间的关系，建立通信兵心理选拔标准。

Jiangxi Planning and Design Institute for Posts and Telecommunications Limited 9th floor of Machinery Building, NO.3 Provincial Government Compound South 1st Road, Nanchang, Jiangxi 330046

近年来我院完成的数百项工程设计，质量合格率100%，优良品率达95%以上，受到了建设单位和有关部门的表彰，为省内外通信基本建设做出了较大的贡献。

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。