查询词典 dissertation

ABSTRACT The dissertation presents a scheme of full digital AC driver system based on digital signal processor .

本文研究了基于数字信号处理器DSP的全数字交流伺服系统的设计方法。

This dissertation introduced the control system of the robot, including the hardware and software , the core of which is a Digital Signal Processor.

本文介绍了足球机器人的控制系统，包括以DSP为核心的控制电路和控制软件。

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。

This dissertation is devoted in the study of the new principles of digital protection for HV transmission line.

探索新的保护原理和方法，以提高输电线路保护的性能，是继电保。。。

In this dissertation, the more denoting β-diketone ligand is used to weaken the electrophilic property of Ti center to obtain a complex for use as a catalyst precursor to polymerize ethylene, vinyl pyridine and acrylonitrile.

如何通过化学或物理化学方法来调节活性中心与非极性烯烃、活性中心与极性单体这两者之间的性能差异，使之同时能适应两类单体聚合无疑是很重要的。

This dissertation carries out an in-depth study on Marx's text, and constructs a new value dimension of social development theory.

西方新发展理论对"人的本质"、"社会的本质"、"解决人与社会问题的方法"，以及"发展的价值诉求"等的理解都存在局限性。

The work of this dissertation is to improve the switching performance of the internal diode of this kind of integrated device.

本论文的研究以提高集成器件中续流二极管的开关性能为研究目标。

The Greek mathematician Diophantus of Alexandria\'s Arithmetica, which dealing with problems in indeterminate analysis, is systematically studied in this doctoral dissertation.

丢番图《算术》的重要性一直为西方科学史家所关注，很早就开展了这方面的研究工作。

This dissertation adopts an approach of positivism and integrates the synchronic and diachronic, the phonetics and phonology as well as qualitative and quantitative so as to observe, analyze and describe the diphthong in a vision of historical typology.

本文立足于共时和历时相结合，宏观和微观相结合，语音学和音系学相结合，定性研究和定量研究相结合的研究方法，寄希望于在未来的时间里采用更好的方法来解决研究中发现的某些问题。

This dissertation specializes in Jiujiangs economy from the angle of the switchover of diplex roles.

本文选择从中心到边缘双重角色换位的角度对九江进行专题研究。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。