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。

Though Frequency Hopping has been widely used in military communication area, it is often submitted to designedly jamming.

虽然跳频通信在军事通信领域得到了广泛的应用，但是易受人为干扰却是跳频通信的顽疾，因此结合FH／ST-FSK实现扩频通信具有重大意义。

Circuit principles, analogue circuit, digit circuit which laid me a solid foundation of circuit for the study of communication; the study of electronic circuit of communication provided me with the working principles of analog communication system; the study on communication theory made me grasp the working methods of digital communication; the study on electromagnetic field, electromagnetic wave and aerial let me know that how signals travel through signal paths and how to apply signal and linear system, random signal and system to the research of noise's impact on signals

学习了电路原理、模拟电路、数字电路打下了学习通信的电路基础；学习了通信电子线路掌握了模拟通信系统的工作原理；学习了通信原理掌握了数字通信的工作方法；学习了电磁场与电磁波、微波与天线了解了信号如何在信道中传输；学习了信号与线性系统和随机信号与系统来研究噪声对信号的影响。

Firstly, the characteristics of CAN bus are analyzed and it's reliability、expeditiousness and flexibility are tested. A communication network of substation automation system constructed on CAN bus is presented and confirmed. Secondly, the dissertation discusses the main structure of substation automation system, as well as the content and request of substation digital communication. According to this, it gives the project of constructing the substation CAN communication network and the communication protocol. And according to different requests of power system, it makes research and tests of the calculation of the communication parameters in the network. Communication manager is the key to communication network based on CAN bus.

论文首先分析了CAN总线的特性，对其可靠性、实时性、灵活性进行了实践验证，确定了用CAN总线来构建变电站综合自动化系统数据通信网络的可行性，并在对变电站综合自动化系统的结构及数据通信的内容和要求做了研究和分析的基础上提出了基于CAN总线的变电站综合自动化数据通信网络的构建方案，编制了相应的基于CAN总线的变电站综合自动化系统通信协议，同时针对电力系统的不同要求，对CAN总线通信网络中通信参数的计算进行了研究和验证。

The other filiation of morden communication is sound communication, the purpose of sound communication is enable immediate、no error、no interrupt communication.

现代通信的另外一个分支就是语音通信，语音通信要达到的目的是能够实时地，无差错、无干扰地通信。

Cooperative communication can inosculate with other techniques and be broadly applied in wireless communciation. Cooperative communication is becoming one of the most important theme in next generation research field on wireless communication.

协作通信是一种技术，更是一种通信的方式、一种思想，它可以和其它的通信技术充分融合，在无线通信领域中得到广泛的应用，成为下一代无线通信技术的重要研究领域。

The hierarchy architecture of the compiling system is presented. Thinking about the way of alignment and distribution of a array, the range of a index variable in a FORALL statement, and the subscript expression of the element of a array, the communication requirements in an array assignment are classified into three categories: no communication, SHIFT communication, and other type of communication.

综合数组的分布方式、对准、FORALL语句的空间索引变量范围以及数组元素的下标表达式，将程序语句中所隐含的通信划分为3种情形，即无通信、SHIFT通信和其它通信，指出了这种划分的意义，给出相应的通信检测算法，描述了具体的实现细节；详细讨论了SHIFT通信以及利用阴影区技术对它进行的优化，对于REMAP通信的典型形式及其优化也进行了讨论。

Communications functions range from basic ultrahigh/very high frequency to single channel ground and airborne radio system and Have Quick. The aircraft also supports several datalinks for communications and situational awareness such as Link 16 and a specialized multi-array datalink for stealthy communications between aircraft.

通信系统功能有甚高频/超高频频段通信，单通道空地无线电系统以及"Have Quick"跳频通信。F-35还支持多种通信和战场感知数据链，例如16号链以及一条用于战机间保密通信的多阵列数据链。

The current second-generation and third-generation (3G) mobile communication systems operate with narrow audio bandwidth limited to 200-3400Hz.As wireless systems are evolving from voice-telephony dominated services to multimedia and high-speed data services, the introduction of a wider bandwidth of 50–7000 Hz speech codec which provides substantially improved speech quality and naturalness is quite necessary. The Adaptive Multi-rate Wideband speech codec which was selected by 3GPP/ETSI and ITU-T can provide natural, present and comfortable codec speech and have higher intelligence and robustness in wireless systems. A wide range of applications are envisioned for AMR-WB, including ISDN wideband telephony and audio/video teleconferencing,Voice over IP and Internet applications such as IP video conferencing, voice mail, voice chat, broadcast, and voice streaming.

随着现代无线通信特别是多媒体通信的发展，人们对语音通信的质量要求越来越高。3GPP/ETSI TS026和ITU-T 722.2标准确定的自适应宽带语音编解码器AMR-WB具有的低比特率、互操作性和高语音质量，使之不仅能够应用于无线通信领域，而且可广泛应用于其他各种通信系统和平台，包括：VoIP、因特网、PSTN高质量音频会议、音频流、ISDN宽带电话、ISDN可视电话和电视会议等。

Mobile office will make your career unimpeded（注:unimped附图 adj.未受阻止的）,and will realize the dream ofcompletely free communication.

移动办公室将使你的事业畅通无阻，实现完全自由通信的梦想。

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。