查询词典 analog to digital

On the basis of investigating current situation of construction of academic digital libraries in China,this article makes classification statistic and analysis about the quality and quantity of digital resources construction,the development of digital resources integration,of thirtysix academic libraries and compare them.

当今数字图书馆建设已成为衡量一个国家信息基础和信息产业水平的重要标志。自上世纪末以来，各国竞相投资数字图书馆建设，并在世界范围内掀起了数字图书馆建设高潮。近年，我国各领域，特别是高校图书馆正紧跟世界发展的潮流，也掀起了一个数字图书馆建设的热浪，并取得了可喜的成果。

The book is divided into 14 chapters, including Introduction, continuous control system theory, process and discrete sampling, Z transform, sampled-data systems, discrete approximation of continuous system the equivalent, based on mathematical transform the classical design method, based on state space pole placement design methodology, multi-variable system of quadratic optimal control, quantitative effects, the choice of sampling period, the digital control system modeling, digital control system for a variety of design methods, variables quadratic optimal control systems, sampling cycle of selection, non-linear control of the problem, as well as digital control system, a typical application - Disk drive servo control design.

全书共分14章，内容包括概论、连续控制系统理论、采样过程和离散化、Z变换、采样数据系统、连续系统的近似离散等效、基于数学变换的经典设计方法、基于状态空间的极点配置设计方法、多变量系统的二次型最优控制、量化效应、采样周期的选择、数字控制系统的建模问题、数字控制系统的各种设计方法、变量系统的二次型最优控制、采样周期的选择、非线性控制的有关问题，以及数字控制系统的一个典型应用——磁盘驱动器的伺服控制设计等。

Through the discourse on elements of printing quality controlment, and the printing controlling digital and methods, the thesis is going to give an elaboration and analysis on the printing quality controlment, in five aspects as the data transmission in digital flowsheet, color management in open sysem, data transmission and management, digital preliminary and on-line printing quality testing.

通过论述印刷质量控制影响因素和质量控制的数字化及其方法后，从数字化流程中数据流的传递、开放式体系下的色彩管理、数据传输与管理、数码打样、在线印刷质量检测五个方面进行印刷质量控制的阐述和分析。

Digital IF mainly include: Digital Up Convert、Digital Down Convert.A/D、D/A and Number control oscillator.

数字中频处理主要包括数字上变频、数字下变频、A/D与D/A的处理以及数控振荡器等。

May say that the digital supervision system's core is the image compression storage technology and the network digital supervision system, regarding these two kind of technologies in supervisory system's application, is the digital supervision system's present situation and the trend of development.

可以说数字监控系统的核心就是图像压缩存储技术和网络化数字监控系统，围绕这两种技术在监控系统中的应用，就是数字监控系统的现状及发展趋势。

May say that the digital supervision systems core is the image compression storage technology and the network digital supervision system, regarding these two kind of technologies in supervisory systems application, is the digital supervision systems present situation and the trend of development.

可以说数字监控系统的核心就是图像压缩存储技术和网络化数字监控系统，围绕这两种技术在监控系统中的应用，就是数字监控系统的现状及发展趋势。

As a special plan, it is highly summarized the basis for mapping the city's main achievements in recent years, pointing out the current development trend of the information age, and from the organization, financial, technical, security and other aspects of proposed safeguards, in order to Hebi City the completion of the socialist market economic system and practical basis for mapping the local management system and operational mechanism to achieve 1:5000 digital topographic map of the city's coverage, 1:2000,1:1000 and 1:500 scale digital topographic map series covering the key areas and the current trend of dynamic, fast updates, and built municipal basic geographic information and data systems and their transmission network system, and build e-government improve the Hebi City-based natural resources and spatial geographic information database, to build "digital Hebi" geo-spatial information infrastructure framework, and can basically meet the economic and social development of basic surveying and mapping needs of protection and support.

作为专项规划，它高度总结了该市基础测绘工作近年来所取得的主要成就，指明了当今信息化时代的发展趋势，并从组织、财力、技术、安全等方面提出了保障措施，为鹤壁市建成适应社会主义市场经济体制和本地实际的基础测绘管理体制和运行机制，实现1：5000数字化地形图的全市覆盖，1：2000、1：1000及1：500数字化系列比例尺地形图的重点区域覆盖和现势性动态快速更新，建成市级基础地理信息数据体系及其传输网络体系，建成完善鹤壁市电子政务自然资源与空间地理基础信息库，构建"数字鹤壁"地理空间信息基础框架，以及基本满足国民经济和社会发展对基础测绘的需求提供了保障和支撑。

In 2010, Hebei Province Survey and Mapping Bureau of the overall work requirements are: to further strengthen the surveying and mapping work, and continue to carry out special rectification geographic information market, establish and improve long-term mechanism; the completion of "Eleventh Five-Year" plan provincial base mapping to achieve the basic topography of 1:1 million, map covering the whole province; do a good job,"Homeland environment and disaster monitoring State Key Laboratory of Surveying and Mapping Agency," the construction and development, promoting surveying and mapping scientific and technological progress; raise the "Integrated Service in Hebei satellite positioning system," the promotion and application; the preparation of good levels " Shier Wu "basic surveying and mapping plan, focus on promoting the" digital Hebei "," Digital City "geo-spatial framework of the building, do a good job in Shijiazhuang" National Digital City Construction pilot "demonstration project construction, improve the level of public services, surveying and mapping for economic development to provide timely Effective mapping support.

2010年，河北省测绘局总体工作要求是：进一步加强测绘工作，继续开展地理信息市场专项整治，建立健全长效机制；完成"十一五"省级基础测绘规划，实现1：1万基本地形图全省覆盖；抓好"国土环境与灾害监测国家测绘局重点实验室"的建设与发展，推进测绘科技进步；加大"河北省卫星定位综合服务系统"的推广应用；编制好各级"十二五"基础测绘规划，着力推进"数字河北"、"数字城市"地理空间框架建设，抓好石家庄"全国数字城市建设试点"的示范工程建设，提高测绘公共服务水平，为经济发展提供及时有效的测绘保障。

Digital cymometer whether one examine into signal digital measuring instrument of frequency with the decimal system digital display.

摘要数字频率计是一种用十进制数字显示被测信号频率的数字测量仪器。

In this precondition, Digital Library should carry on the building of digital resources and digital services designedly and cooperatively.

本文旨在通过I以S的发展历程，分析中国图书馆信息化建设各个阶段的基本特征，从而对图书馆信息化建设的未来发展方向提出参考

Salt is good, but if the salt becomes flat and tasteless, with what do you season it?

14：33 盐本是好的，盐若失了味，可用什么叫它再咸呢？

He reiterated that the PLA is an army of the people under the leadership of the Communist Party of China.

他重申，人民解放军是在中国共产党领导下的人民军队。