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Publicado por Beijing Normal University Pub. Date:, 2007
ISBN 10: 7303113398ISBN 13: 9787303113392
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Language:Chinese.Pages Number: 215 Publisher: Beijing Normal University Pub. Date:. Contents: Chapter 1 Introduction 1.1 The concept of communication signals and communication 1.1.2 1.1.1 1.2 communication signal classification system. the composition of the general model of communication systems 1.2.1 1.2. 2 analog communication systems and digital communication systems 1.2.3 The main features of digital communication systems Communications System 1.3 Classification and communication 1.3.1 1.
Publicado por Beijing Normal University Press Pub. Date :2009-08, 2009
ISBN 10: 7303103309ISBN 13: 9787303103300
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Language:Chinese.Pages Number: 236 Publisher: Beijing Normal University Press Pub. Date :2009-08. This book includes: fiber and cable. fiber optic cable line construction and maintenance. lighting. photoelectric detectors. passive optical components. PDH optical transmission systems. Contents: Chapter 1 Introduction 1.1 Overview of optical fiber communication optical communication history of the development 1.1.1 1.1.2 1.2 Overview of optical fiber communications in the position of the electr.
Publicado por Beijing Normal University Publishing Group. Beijing Normal University Press, 2000
ISBN 10: 730310335XISBN 13: 9787303103355
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Paperback. Pub Date: 2009 08 Pages: 264 Language: Chinese in Publisher: Beijing Normal University Publishing Group. Beijing Normal University Press book is divided into 12 chapters: Chapter 1 introduces the basic concepts of the modern communication network. classification. structure. communication protocol. type of business and performance indicators. and summary and analysis of the history. status and trends of the development of modern communications network. Chapter 2 describes the basic .
Publicado por Fudan University Press Pub. Date :2009-07, 2009
ISBN 10: 7309065832ISBN 13: 9787309065831
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Language:Chinese.English.Pages Number: 409 Publisher: Fudan University Press Pub. Date :2009-07. Book a total of 14 units. each unit consists of four parts. This book not only describes the tourism industry expertise. but also foreign natural landscape. cultural landscape. historical figures. folk sentiments and cultural differences. and many other aspects of knowledge. Book with a CD-ROM. Contents: unitonepartiintensivereadingthebiggestemployerintheworldpartiicomprehensionex ercisespartiiiext.
ISBN 10: 7558197694ISBN 13: 9787558197697
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Language:Chinese.Paperback. Pub Date: 2020-12-01 Publisher: Jilin Publishing Group Co. Ltd. This book takes Newton as the central figure to show the development of modern natural science. especially the breakthrough of celestial mechanics. and expand scientific thinking through vivid character stories Combined with the demonstration of celestial mechanics. readers can enter the first scene of the great achievements of modern natural science. and experience how human beings realize the scient.
Publicado por China Railway Press, 2014
ISBN 10: 711317972XISBN 13: 9787113179724
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Paperback. Pub Date :2014-02-01 Pages: 340 Language: Chinese Publisher: China Railway Publishing House. Introduction to the railway communication to adapt to the new situation and the development of railway and railway communications technology to enhance the level of communications equipment prepared. Railway Communication Studies systematic and comprehensive exposition of the basic theory and application of railway railway communications technology communications. The book has ten chapters.
ISBN 10: 7558420237ISBN 13: 9787558420238
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Paperback. Pub Date: 2020-09-01 Pages: 112 Language: Chinese Publisher: Jiangsu Phoenix Children's Publishing House This set of bridge books tailored for primary school students in first and second grades has played a good role in cohesion and transition The role of: transition from picture books to text books in form. and transition from parent-child co-reading to children's independent reading in terms of method. The three stories revolve around the perplexities and problems that children e.
Publicado por China Railway Press, 2021
ISBN 10: 7113280269ISBN 13: 9787113280260
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
paperback. Condición: New. Language:Chinese.Paperback. Pub Date: 2021-08-01 Pages: 252 Publisher: China Railway Publishing House This book is written to adapt to the new situation of the development of railway communication technology and the improvement of railway communication equipment.?This book systematically and comprehensively expounds the basic theory of railway communication and the application of railway communication technology. including railway transmission network. telephone exchange network. access netwo.
ISBN 10: 7116117296ISBN 13: 9787116117297
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
Hardcover. Condición: New. Language:Chinese.Hardcover. Pub Date: 272 Publisher: Geological Press This book collection summarizes the greatest 57 fantasy places in history. all over the world. These places are like a ghost. there is always a legend. but no one really has seen their true face. and most of them exist only in the world's hidden ethnic groups and this book carefully included .
Publicado por Beijing United Publishing co., LTD, 2021
ISBN 10: 7559647235ISBN 13: 9787559647238
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
Hardcover. Condición: New. Language:Chinese.HardCover.Pub Date:2021-01-01 Pages:264 Publisher:Beijing United Publishing Co. Ltd. This book is a collection of general atlases of the astronomy subject. The history of the system has a brilliant summary.?The author sorted out the development process of human visual understanding of the sky since ancient times. From ancient times. medieval times. modern times. and modern times. the obsessive culture of celestial bodies around the world. as well as stories and legends. comb.